77087434 has 16 divisors (see below), whose sum is σ = 116951688. Its totient is φ = 38106112.

The previous prime is 77087431. The next prime is 77087441. The reversal of 77087434 is 43478077.

It can be written as a sum of positive squares in 4 ways, for example, as 65205625 + 11881809 = 8075^2 + 3447^2 .

It is not an unprimeable number, because it can be changed into a prime (77087431) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 96324 + ... + 97120.

Almost surely, 2^77087434 is an apocalyptic number.

77087434 is a deficient number, since it is larger than the sum of its proper divisors (39864254).

77087434 is a wasteful number, since it uses less digits than its factorization.

77087434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1289.

The product of its (nonzero) digits is 131712, while the sum is 40.

The square root of 77087434 is about 8779.9449884381. The cubic root of 77087434 is about 425.5930525665.

The spelling of 77087434 in words is "seventy-seven million, eighty-seven thousand, four hundred thirty-four".