77689074 has 16 divisors (see below), whose sum is σ = 157345920. Its totient is φ = 25568400.

The previous prime is 77689063. The next prime is 77689091. The reversal of 77689074 is 47098677.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 81477 + ... + 82424.

It is an arithmetic number, because the mean of its divisors is an integer number (9834120).

Almost surely, 2^77689074 is an apocalyptic number.

77689074 is an abundant number, since it is smaller than the sum of its proper divisors (79656846).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

77689074 is a wasteful number, since it uses less digits than its factorization.

77689074 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163985.

The product of its (nonzero) digits is 592704, while the sum is 48.

The square root of 77689074 is about 8814.1405706966. The cubic root of 77689074 is about 426.6973853480.

It can be divided in two parts, 7 and 7689074, that added together give a triangular number (7689081 = T₃₉₂₁).

The spelling of 77689074 in words is "seventy-seven million, six hundred eighty-nine thousand, seventy-four".