77814612 has 36 divisors (see below), whose sum is σ = 205252320. Its totient is φ = 24810192.

The previous prime is 77814601. The next prime is 77814613. The reversal of 77814612 is 21641877.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×77814612² = 12110227681421088, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77814613) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 46162 + ... + 47817.

Almost surely, 2^77814612 is an apocalyptic number.

It is an amenable number.

77814612 is an abundant number, since it is smaller than the sum of its proper divisors (127437708).

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

77814612 is a wasteful number, since it uses less digits than its factorization.

77814612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94012 (or 94007 counting only the distinct ones).

The product of its digits is 18816, while the sum is 36.

The square root of 77814612 is about 8821.2590938029. The cubic root of 77814612 is about 426.9270955101.

The spelling of 77814612 in words is "seventy-seven million, eight hundred fourteen thousand, six hundred twelve".