97772490 has 24 divisors (see below), whose sum is σ = 254208708. Its totient is φ = 26072640.

The previous prime is 97772489. The next prime is 97772501. The reversal of 97772490 is 9427779.

It is a happy number.

97772490 is a `hidden beast` number, since 97 + 7 + 72 + 490 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 91527489 + 6245001 = 9567^2 + 2499^2 .

It is a super-3 number, since 3×97772490³ (a number of 25 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 543091 + ... + 543270.

Almost surely, 2^97772490 is an apocalyptic number.

97772490 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

97772490 is an abundant number, since it is smaller than the sum of its proper divisors (156436218).

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

97772490 is a wasteful number, since it uses less digits than its factorization.

97772490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1086374 (or 1086371 counting only the distinct ones).

The product of its (nonzero) digits is 222264, while the sum is 45.

The square root of 97772490 is about 9887.9972694171. The cubic root of 97772490 is about 460.6865771278.

The spelling of 97772490 in words is "ninety-seven million, seven hundred seventy-two thousand, four hundred ninety".