65072157 has 8 divisors (see below), whose sum is σ = 87574176. Its totient is φ = 42975792.

The previous prime is 65072153. The next prime is 65072167. The reversal of 65072157 is 75127056.

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

It is not a de Polignac number, because 65072157 - 2² = 65072153 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65072153) 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, 101038 + ... + 101679.

It is an arithmetic number, because the mean of its divisors is an integer number (10946772).

Almost surely, 2^65072157 is an apocalyptic number.

It is an amenable number.

65072157 is a deficient number, since it is larger than the sum of its proper divisors (22502019).

65072157 is a wasteful number, since it uses less digits than its factorization.

65072157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 202827.

The product of its (nonzero) digits is 14700, while the sum is 33.

The square root of 65072157 is about 8066.7314942299. The cubic root of 65072157 is about 402.2213021249.

The spelling of 65072157 in words is "sixty-five million, seventy-two thousand, one hundred fifty-seven".