655197970 has 16 divisors (see below), whose sum is σ = 1347835968. Its totient is φ = 224639280.

The previous prime is 655197937. The next prime is 655197971. The reversal of 655197970 is 79791556.

It is not an unprimeable number, because it can be changed into a prime (655197971) 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 7 ways as a sum of consecutive naturals, for example, 4679916 + ... + 4680055.

It is an arithmetic number, because the mean of its divisors is an integer number (84239748).

Almost surely, 2^655197970 is an apocalyptic number.

655197970 is an abundant number, since it is smaller than the sum of its proper divisors (692637998).

655197970 is a wasteful number, since it uses less digits than its factorization.

655197970 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9359985.

The product of its (nonzero) digits is 595350, while the sum is 49.

The square root of 655197970 is about 25596.8351559329. The cubic root of 655197970 is about 868.5420465978.

The spelling of 655197970 in words is "six hundred fifty-five million, one hundred ninety-seven thousand, nine hundred seventy".