77140712 has 32 divisors (see below), whose sum is σ = 164652480. Its totient is φ = 33538560.

The previous prime is 77140699. The next prime is 77140733. The reversal of 77140712 is 21704177.

It is a Smith number, since the sum of its digits (29) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17033 + ... + 21080.

It is an arithmetic number, because the mean of its divisors is an integer number (5145390).

Almost surely, 2^77140712 is an apocalyptic number.

It is an amenable number.

77140712 is an abundant number, since it is smaller than the sum of its proper divisors (87511768).

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

77140712 is a wasteful number, since it uses less digits than its factorization.

77140712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38153 (or 38149 counting only the distinct ones).

The product of its (nonzero) digits is 2744, while the sum is 29.

The square root of 77140712 is about 8782.9785380587. The cubic root of 77140712 is about 425.6910777296.

Adding to 77140712 its reverse (21704177), we get a palindrome (98844889).

The spelling of 77140712 in words is "seventy-seven million, one hundred forty thousand, seven hundred twelve".