77678074 has 8 divisors (see below), whose sum is σ = 116687808. Its totient is φ = 38782140.

The previous prime is 77678063. The next prime is 77678089. The reversal of 77678074 is 47087677.

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

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 3 ways as a sum of consecutive naturals, for example, 26722 + ... + 29485.

It is an arithmetic number, because the mean of its divisors is an integer number (14585976).

Almost surely, 2^77678074 is an apocalyptic number.

77678074 is a deficient number, since it is larger than the sum of its proper divisors (39009734).

77678074 is a wasteful number, since it uses less digits than its factorization.

77678074 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56900.

The product of its (nonzero) digits is 460992, while the sum is 46.

The square root of 77678074 is about 8813.5165512978. The cubic root of 77678074 is about 426.6772456958.

The spelling of 77678074 in words is "seventy-seven million, six hundred seventy-eight thousand, seventy-four".