77019994 has 8 divisors (see below), whose sum is σ = 115577280. Its totient is φ = 38494236.

The previous prime is 77019959. The next prime is 77020007. The reversal of 77019994 is 49991077.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 324 + ... + 12415.

It is an arithmetic number, because the mean of its divisors is an integer number (14447160).

Almost surely, 2^77019994 is an apocalyptic number.

77019994 is a deficient number, since it is larger than the sum of its proper divisors (38557286).

77019994 is a wasteful number, since it uses less digits than its factorization.

77019994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15764.

The product of its (nonzero) digits is 142884, while the sum is 46.

The square root of 77019994 is about 8776.1035773286. The cubic root of 77019994 is about 425.4689062215.

The spelling of 77019994 in words is "seventy-seven million, nineteen thousand, nine hundred ninety-four".