66056501 has 8 divisors (see below), whose sum is σ = 75542784. Its totient is φ = 56582640.

The previous prime is 66056491. The next prime is 66056527. The reversal of 66056501 is 10565066.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 66056501 - 2¹⁰ = 66055477 is a prime.

It is a super-2 number, since 2×66056501² = 8726922648726002, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66056531) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16931 + ... + 20463.

It is an arithmetic number, because the mean of its divisors is an integer number (9442848).

Almost surely, 2^66056501 is an apocalyptic number.

It is an amenable number.

66056501 is a deficient number, since it is larger than the sum of its proper divisors (9486283).

66056501 is a wasteful number, since it uses less digits than its factorization.

66056501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6211.

The product of its (nonzero) digits is 5400, while the sum is 29.

The square root of 66056501 is about 8127.5150568916. The cubic root of 66056501 is about 404.2392894240.

The spelling of 66056501 in words is "sixty-six million, fifty-six thousand, five hundred one".