97990506 has 16 divisors (see below), whose sum is σ = 217756800. Its totient is φ = 32663484.

The previous prime is 97990471. The next prime is 97990517. The reversal of 97990506 is 60509979.

It is a super-2 number, since 2×97990506² = 19204278532272072, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 907266 + ... + 907373.

It is an arithmetic number, because the mean of its divisors is an integer number (13609800).

Almost surely, 2^97990506 is an apocalyptic number.

97990506 is an abundant number, since it is smaller than the sum of its proper divisors (119766294).

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

97990506 is a wasteful number, since it uses less digits than its factorization.

97990506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1814650 (or 1814644 counting only the distinct ones).

The product of its (nonzero) digits is 153090, while the sum is 45.

The square root of 97990506 is about 9899.0154055845. The cubic root of 97990506 is about 461.0287404658.

The spelling of 97990506 in words is "ninety-seven million, nine hundred ninety thousand, five hundred six".