78032997 has 64 divisors (see below), whose sum is σ = 142848000. Its totient is φ = 41114304.

The previous prime is 78032993. The next prime is 78033001. The reversal of 78032997 is 79923087.

It is an interprime number because it is at equal distance from previous prime (78032993) and next prime (78033001).

It is not a de Polignac number, because 78032997 - 2² = 78032993 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78032993) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 125754 + ... + 126372.

It is an arithmetic number, because the mean of its divisors is an integer number (2232000).

Almost surely, 2^78032997 is an apocalyptic number.

It is an amenable number.

78032997 is a deficient number, since it is larger than the sum of its proper divisors (64815003).

78032997 is a wasteful number, since it uses less digits than its factorization.

78032997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 687 (or 681 counting only the distinct ones).

The product of its (nonzero) digits is 190512, while the sum is 45.

The square root of 78032997 is about 8833.6287560662. The cubic root of 78032997 is about 427.3261096409.

The spelling of 78032997 in words is "seventy-eight million, thirty-two thousand, nine hundred ninety-seven".