361251660 has 96 divisors (see below), whose sum is σ = 1261112832. Its totient is φ = 75064320.

The previous prime is 361251641. The next prime is 361251689. The reversal of 361251660 is 66152163.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

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, 34477 + ... + 43716.

It is an arithmetic number, because the mean of its divisors is an integer number (13136592).

Almost surely, 2^361251660 is an apocalyptic number.

361251660 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

361251660 is an abundant number, since it is smaller than the sum of its proper divisors (899861172).

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

361251660 is a wasteful number, since it uses less digits than its factorization.

361251660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78223 (or 78221 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 30.

The square root of 361251660 is about 19006.6214777903. The cubic root of 361251660 is about 712.2021555965.

The spelling of 361251660 in words is "three hundred sixty-one million, two hundred fifty-one thousand, six hundred sixty".