660764086455 has 64 divisors (see below), whose sum is σ = 1163329920000. Its totient is φ = 317605432320.

The previous prime is 660764086447. The next prime is 660764086457. The reversal of 660764086455 is 554680467066.

It is not a de Polignac number, because 660764086455 - 2³ = 660764086447 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 660764086395 and 660764086404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (660764086457) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 9058971 + ... + 9131619.

It is an arithmetic number, because the mean of its divisors is an integer number (18177030000).

Almost surely, 2^660764086455 is an apocalyptic number.

660764086455 is a deficient number, since it is larger than the sum of its proper divisors (502565833545).

660764086455 is a wasteful number, since it uses less digits than its factorization.

660764086455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73144.

The product of its (nonzero) digits is 29030400, while the sum is 57.

The spelling of 660764086455 in words is "six hundred sixty billion, seven hundred sixty-four million, eighty-six thousand, four hundred fifty-five".