66152657 has 4 divisors (see below), whose sum is σ = 66180096. Its totient is φ = 66125220.

The previous prime is 66152599. The next prime is 66152689. The reversal of 66152657 is 75625166.

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 a cyclic number.

It is not a de Polignac number, because 66152657 - 2¹² = 66148561 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 66152657.

It is not an unprimeable number, because it can be changed into a prime (66154657) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9713 + ... + 15054.

It is an arithmetic number, because the mean of its divisors is an integer number (16545024).

Almost surely, 2^66152657 is an apocalyptic number.

It is an amenable number.

66152657 is a deficient number, since it is larger than the sum of its proper divisors (27439).

66152657 is a wasteful number, since it uses less digits than its factorization.

66152657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27438.

The product of its digits is 75600, while the sum is 38.

The square root of 66152657 is about 8133.4283669311. The cubic root of 66152657 is about 404.4353397103.

The spelling of 66152657 in words is "sixty-six million, one hundred fifty-two thousand, six hundred fifty-seven".