97990077 has 16 divisors (see below), whose sum is σ = 134233088. Its totient is φ = 63549360.

The previous prime is 97990073. The next prime is 97990103. The reversal of 97990077 is 77009979.

It is not a de Polignac number, because 97990077 - 2² = 97990073 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97990073) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33558 + ... + 36360.

It is an arithmetic number, because the mean of its divisors is an integer number (8389568).

Almost surely, 2^97990077 is an apocalyptic number.

It is an amenable number.

97990077 is a deficient number, since it is larger than the sum of its proper divisors (36243011).

97990077 is a wasteful number, since it uses less digits than its factorization.

97990077 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3120.

The product of its (nonzero) digits is 250047, while the sum is 48.

The square root of 97990077 is about 9898.9937367391. The cubic root of 97990077 is about 461.0280676740.

The spelling of 97990077 in words is "ninety-seven million, nine hundred ninety thousand, seventy-seven".