78877059 has 12 divisors (see below), whose sum is σ = 111720984. Its totient is φ = 49490944.

The previous prime is 78877031. The next prime is 78877069. The reversal of 78877059 is 95077887.

It is not a de Polignac number, because 78877059 - 2⁹ = 78876547 is a prime.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is not an unprimeable number, because it can be changed into a prime (78877069) 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, 44622 + ... + 46355.

It is an arithmetic number, because the mean of its divisors is an integer number (9310082).

Almost surely, 2^78877059 is an apocalyptic number.

78877059 is a deficient number, since it is larger than the sum of its proper divisors (32843925).

78877059 is a wasteful number, since it uses less digits than its factorization.

78877059 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91014 (or 90997 counting only the distinct ones).

The product of its (nonzero) digits is 987840, while the sum is 51.

The square root of 78877059 is about 8881.2757529535. The cubic root of 78877059 is about 428.8613447723.

The spelling of 78877059 in words is "seventy-eight million, eight hundred seventy-seven thousand, fifty-nine".