655485697 has 4 divisors (see below), whose sum is σ = 656398080. Its totient is φ = 654573316.

The previous prime is 655485689. The next prime is 655485709. The reversal of 655485697 is 796584556.

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 655485697 - 2³ = 655485689 is a prime.

It is a super-2 number, since 2×655485697² = 859322997943151618, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (655485097) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 455113 + ... + 456550.

It is an arithmetic number, because the mean of its divisors is an integer number (164099520).

Almost surely, 2^655485697 is an apocalyptic number.

It is an amenable number.

655485697 is a deficient number, since it is larger than the sum of its proper divisors (912383).

655485697 is an equidigital number, since it uses as much as digits as its factorization.

655485697 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 912382.

The product of its digits is 9072000, while the sum is 55.

The square root of 655485697 is about 25602.4549018253. The cubic root of 655485697 is about 868.6691666626.

The spelling of 655485697 in words is "six hundred fifty-five million, four hundred eighty-five thousand, six hundred ninety-seven".