655109697 has 8 divisors (see below), whose sum is σ = 952886880. Its totient is φ = 397036160.

The previous prime is 655109677. The next prime is 655109699. The reversal of 655109697 is 796901556.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 655109697 - 2¹⁶ = 655044161 is a prime.

It is not an unprimeable number, because it can be changed into a prime (655109699) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9925872 + ... + 9925937.

It is an arithmetic number, because the mean of its divisors is an integer number (119110860).

Almost surely, 2^655109697 is an apocalyptic number.

It is an amenable number.

655109697 is a deficient number, since it is larger than the sum of its proper divisors (297777183).

655109697 is a wasteful number, since it uses less digits than its factorization.

655109697 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19851823.

The product of its (nonzero) digits is 510300, while the sum is 48.

The square root of 655109697 is about 25595.1108026514. The cubic root of 655109697 is about 868.5030394280.

The spelling of 655109697 in words is "six hundred fifty-five million, one hundred nine thousand, six hundred ninety-seven".