662031157 has 4 divisors (see below), whose sum is σ = 670007520. Its totient is φ = 654054796.

The previous prime is 662031151. The next prime is 662031173. The reversal of 662031157 is 751130266.

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 a de Polignac number, because none of the positive numbers 2^k-662031157 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 (662031151) 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, 3988057 + ... + 3988222.

It is an arithmetic number, because the mean of its divisors is an integer number (167501880).

Almost surely, 2^662031157 is an apocalyptic number.

It is an amenable number.

662031157 is a deficient number, since it is larger than the sum of its proper divisors (7976363).

662031157 is an equidigital number, since it uses as much as digits as its factorization.

662031157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7976362.

The product of its (nonzero) digits is 7560, while the sum is 31.

The square root of 662031157 is about 25729.9661290100. The cubic root of 662031157 is about 871.5510083159.

The spelling of 662031157 in words is "six hundred sixty-two million, thirty-one thousand, one hundred fifty-seven".