655032378 has 64 divisors (see below), whose sum is σ = 1758984192. Its totient is φ = 157049280.

The previous prime is 655032377. The next prime is 655032379. The reversal of 655032378 is 873230556.

It is an interprime number because it is at equal distance from previous prime (655032377) and next prime (655032379).

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (655032377) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 48526 + ... + 60537.

It is an arithmetic number, because the mean of its divisors is an integer number (27484128).

Almost surely, 2^655032378 is an apocalyptic number.

655032378 is an abundant number, since it is smaller than the sum of its proper divisors (1103951814).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

655032378 is a wasteful number, since it uses less digits than its factorization.

655032378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109099.

The product of its (nonzero) digits is 151200, while the sum is 39.

The square root of 655032378 is about 25593.6003328957. The cubic root of 655032378 is about 868.4688698689.

The spelling of 655032378 in words is "six hundred fifty-five million, thirty-two thousand, three hundred seventy-eight".