78880377 has 16 divisors (see below), whose sum is σ = 110859840. Its totient is φ = 49812672.

The previous prime is 78880367. The next prime is 78880393. The reversal of 78880377 is 77308887.

It is not a de Polignac number, because 78880377 - 2⁶ = 78880313 is a prime.

It is a super-2 number, since 2×78880377² = 12444227751324258, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (78880367) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3943 + ... + 13164.

It is an arithmetic number, because the mean of its divisors is an integer number (6928740).

Almost surely, 2^78880377 is an apocalyptic number.

It is an amenable number.

78880377 is a deficient number, since it is larger than the sum of its proper divisors (31979463).

78880377 is a wasteful number, since it uses less digits than its factorization.

78880377 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17192.

The product of its (nonzero) digits is 526848, while the sum is 48.

The square root of 78880377 is about 8881.4625484770. The cubic root of 78880377 is about 428.8673581050.

The spelling of 78880377 in words is "seventy-eight million, eight hundred eighty thousand, three hundred seventy-seven".