78949066 has 16 divisors (see below), whose sum is σ = 142464960. Its totient is φ = 32054400.

The previous prime is 78949043. The next prime is 78949099. The reversal of 78949066 is 66094987.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 148135 + ... + 148666.

It is an arithmetic number, because the mean of its divisors is an integer number (8904060).

Almost surely, 2^78949066 is an apocalyptic number.

78949066 is a deficient number, since it is larger than the sum of its proper divisors (63515894).

78949066 is a wasteful number, since it uses less digits than its factorization.

78949066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 296829.

The product of its (nonzero) digits is 653184, while the sum is 49.

The square root of 78949066 is about 8885.3286939764. The cubic root of 78949066 is about 428.9918078284.

The spelling of 78949066 in words is "seventy-eight million, nine hundred forty-nine thousand, sixty-six".