77976842 has 8 divisors (see below), whose sum is σ = 120738432. Its totient is φ = 37730700.

The previous prime is 77976823. The next prime is 77976869. The reversal of 77976842 is 24867977.

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, 628784 + ... + 628907.

It is an arithmetic number, because the mean of its divisors is an integer number (15092304).

Almost surely, 2^77976842 is an apocalyptic number.

77976842 is a deficient number, since it is larger than the sum of its proper divisors (42761590).

77976842 is a wasteful number, since it uses less digits than its factorization.

77976842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1257724.

The product of its digits is 1185408, while the sum is 50.

The square root of 77976842 is about 8830.4497054227. The cubic root of 77976842 is about 427.2235792708.

The spelling of 77976842 in words is "seventy-seven million, nine hundred seventy-six thousand, eight hundred forty-two".