66150601 has 4 divisors (see below), whose sum is σ = 72164304. Its totient is φ = 60136900.

The previous prime is 66150583. The next prime is 66150619. The reversal of 66150601 is 10605166.

66150601 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (66150583) and next prime (66150619).

It is a cyclic number.

It is not a de Polignac number, because 66150601 - 2⁵ = 66150569 is a prime.

It is a super-2 number, since 2×66150601² = 8751804025322402, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66150631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3006835 + ... + 3006856.

It is an arithmetic number, because the mean of its divisors is an integer number (18041076).

Almost surely, 2^66150601 is an apocalyptic number.

It is an amenable number.

66150601 is a deficient number, since it is larger than the sum of its proper divisors (6013703).

66150601 is a wasteful number, since it uses less digits than its factorization.

66150601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6013702.

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 66150601 is about 8133.3019739833. The cubic root of 66150601 is about 404.4311497668.

Adding to 66150601 its reverse (10605166), we get a palindrome (76755767).

The spelling of 66150601 in words is "sixty-six million, one hundred fifty thousand, six hundred one".