78463995 has 32 divisors (see below), whose sum is σ = 132045120. Its totient is φ = 39728640.

The previous prime is 78463969. The next prime is 78463999. The reversal of 78463995 is 59936487.

It is not a de Polignac number, because 78463995 - 2⁵ = 78463963 is a prime.

It is a super-2 number, since 2×78463995² = 12313197022720050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (78463999) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 25057 + ... + 28013.

It is an arithmetic number, because the mean of its divisors is an integer number (4126410).

Almost surely, 2^78463995 is an apocalyptic number.

78463995 is a deficient number, since it is larger than the sum of its proper divisors (53581125).

78463995 is a wasteful number, since it uses less digits than its factorization.

78463995 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3055.

The product of its digits is 1632960, while the sum is 51.

The square root of 78463995 is about 8857.9904605955. The cubic root of 78463995 is about 428.1114126791. Note that the first 3 decimals are identical.

The spelling of 78463995 in words is "seventy-eight million, four hundred sixty-three thousand, nine hundred ninety-five".