662589897157 has 4 divisors (see below), whose sum is σ = 662615223660. Its totient is φ = 662564570656.

The previous prime is 662589897143. The next prime is 662589897173. The reversal of 662589897157 is 751798985266.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 621331756516 + 41258140641 = 788246^2 + 203121^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-662589897157 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 662589897157.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (662589897197) 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, 12623968 + ... + 12676345.

It is an arithmetic number, because the mean of its divisors is an integer number (165653805915).

Almost surely, 2^662589897157 is an apocalyptic number.

It is an amenable number.

662589897157 is a deficient number, since it is larger than the sum of its proper divisors (25326503).

662589897157 is a wasteful number, since it uses less digits than its factorization.

662589897157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25326502.

The product of its digits is 457228800, while the sum is 73.

The spelling of 662589897157 in words is "six hundred sixty-two billion, five hundred eighty-nine million, eight hundred ninety-seven thousand, one hundred fifty-seven".