97780075 has 6 divisors (see below), whose sum is σ = 121247324. Its totient is φ = 78224040.

The previous prime is 97780057. The next prime is 97780087. The reversal of 97780075 is 57008779.

It is a de Polignac number, because none of the positive numbers 2^k-97780075 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1955577 + ... + 1955626.

Almost surely, 2^97780075 is an apocalyptic number.

97780075 is a deficient number, since it is larger than the sum of its proper divisors (23467249).

97780075 is a wasteful number, since it uses less digits than its factorization.

97780075 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3911213 (or 3911208 counting only the distinct ones).

The product of its (nonzero) digits is 123480, while the sum is 43.

The square root of 97780075 is about 9888.3808077966. The cubic root of 97780075 is about 460.6984898765.

The spelling of 97780075 in words is "ninety-seven million, seven hundred eighty thousand, seventy-five".