78671607 has 12 divisors (see below), whose sum is σ = 122021496. Its totient is φ = 44955120.

The previous prime is 78671591. The next prime is 78671623. The reversal of 78671607 is 70617687.

It is an interprime number because it is at equal distance from previous prime (78671591) and next prime (78671623).

It is not a de Polignac number, because 78671607 - 2⁴ = 78671591 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78671207) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 267444 + ... + 267737.

It is an arithmetic number, because the mean of its divisors is an integer number (10168458).

Almost surely, 2^78671607 is an apocalyptic number.

78671607 is a deficient number, since it is larger than the sum of its proper divisors (43349889).

78671607 is a wasteful number, since it uses less digits than its factorization.

78671607 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 535198 (or 535191 counting only the distinct ones).

The product of its (nonzero) digits is 98784, while the sum is 42.

The square root of 78671607 is about 8869.7016297055. The cubic root of 78671607 is about 428.4886676223.

The spelling of 78671607 in words is "seventy-eight million, six hundred seventy-one thousand, six hundred seven".