97788611 has 4 divisors (see below), whose sum is σ = 102935400. Its totient is φ = 92641824.

The previous prime is 97788599. The next prime is 97788619. The reversal of 97788611 is 11688779.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11688779 = 53 ⋅220543.

It is a cyclic number.

It is not a de Polignac number, because 97788611 - 2²² = 93594307 is a prime.

It is a super-2 number, since 2×97788611² = 19125224882618642, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (97788619) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2573366 + ... + 2573403.

It is an arithmetic number, because the mean of its divisors is an integer number (25733850).

Almost surely, 2^97788611 is an apocalyptic number.

97788611 is a deficient number, since it is larger than the sum of its proper divisors (5146789).

97788611 is a wasteful number, since it uses less digits than its factorization.

97788611 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5146788.

The product of its digits is 169344, while the sum is 47.

The square root of 97788611 is about 9888.8124160589. The cubic root of 97788611 is about 460.7118954975.

The spelling of 97788611 in words is "ninety-seven million, seven hundred eighty-eight thousand, six hundred eleven".