97661380 has 48 divisors (see below), whose sum is σ = 209905920. Its totient is φ = 38158848.

The previous prime is 97661353. The next prime is 97661393. The reversal of 97661380 is 8316679.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 178267 + ... + 178813.

It is an arithmetic number, because the mean of its divisors is an integer number (4373040).

Almost surely, 2^97661380 is an apocalyptic number.

It is an amenable number.

97661380 is an abundant number, since it is smaller than the sum of its proper divisors (112244540).

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

97661380 is a wasteful number, since it uses less digits than its factorization.

97661380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 748 (or 746 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 40.

The square root of 97661380 is about 9882.3772443679. The cubic root of 97661380 is about 460.5120007970.

The spelling of 97661380 in words is "ninety-seven million, six hundred sixty-one thousand, three hundred eighty".