78620377 has 8 divisors (see below), whose sum is σ = 85844160. Its totient is φ = 71409360.

The previous prime is 78620317. The next prime is 78620387. The reversal of 78620377 is 77302687.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 78620377 - 2¹⁵ = 78587609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78620317) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13524 + ... + 18442.

It is an arithmetic number, because the mean of its divisors is an integer number (10730520).

Almost surely, 2^78620377 is an apocalyptic number.

It is an amenable number.

78620377 is a deficient number, since it is larger than the sum of its proper divisors (7223783).

78620377 is a wasteful number, since it uses less digits than its factorization.

78620377 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6383.

The product of its (nonzero) digits is 98784, while the sum is 40.

The square root of 78620377 is about 8866.8132381369. The cubic root of 78620377 is about 428.3956385451.

The spelling of 78620377 in words is "seventy-eight million, six hundred twenty thousand, three hundred seventy-seven".