77775112 has 16 divisors (see below), whose sum is σ = 145923840. Its totient is φ = 38862096.

The previous prime is 77775109. The next prime is 77775127. The reversal of 77775112 is 21157777.

It is a super-2 number, since 2×77775112² = 12097936093225088, which contains 22 as substring.

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, 18433 + ... + 22255.

It is an arithmetic number, because the mean of its divisors is an integer number (9120240).

Almost surely, 2^77775112 is an apocalyptic number.

It is an amenable number.

77775112 is a deficient number, since it is larger than the sum of its proper divisors (68148728).

77775112 is a wasteful number, since it uses less digits than its factorization.

77775112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6372 (or 6368 counting only the distinct ones).

The product of its digits is 24010, while the sum is 37.

The square root of 77775112 is about 8819.0199001930. The cubic root of 77775112 is about 426.8548448361.

The spelling of 77775112 in words is "seventy-seven million, seven hundred seventy-five thousand, one hundred twelve".