66850151 has 8 divisors (see below), whose sum is σ = 70567680. Its totient is φ = 63152568.

The previous prime is 66850139. The next prime is 66850153. The reversal of 66850151 is 15105866.

It is a happy number.

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 66850151 - 2⁶ = 66850087 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66850153) 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, 2180 + ... + 11766.

It is an arithmetic number, because the mean of its divisors is an integer number (8820960).

Almost surely, 2^66850151 is an apocalyptic number.

66850151 is a deficient number, since it is larger than the sum of its proper divisors (3717529).

66850151 is a wasteful number, since it uses less digits than its factorization.

66850151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9973.

The product of its (nonzero) digits is 7200, while the sum is 32.

The square root of 66850151 is about 8176.1941635458. The cubic root of 66850151 is about 405.8517885411.

The spelling of 66850151 in words is "sixty-six million, eight hundred fifty thousand, one hundred fifty-one".