77775376 has 40 divisors (see below), whose sum is σ = 174016640. Its totient is φ = 32984064.

The previous prime is 77775359. The next prime is 77775389. The reversal of 77775376 is 67357777.

It is a super-2 number, since 2×77775376² = 12098018223882752, which contains 22 as substring.

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, 7285 + ... + 14443.

It is an arithmetic number, because the mean of its divisors is an integer number (4350416).

Almost surely, 2^77775376 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 77775376, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (87008320).

77775376 is an abundant number, since it is smaller than the sum of its proper divisors (96241264).

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

77775376 is a wasteful number, since it uses less digits than its factorization.

77775376 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7271 (or 7265 counting only the distinct ones).

The product of its digits is 1512630, while the sum is 49.

The square root of 77775376 is about 8819.0348678299. The cubic root of 77775376 is about 426.8553278079.

The spelling of 77775376 in words is "seventy-seven million, seven hundred seventy-five thousand, three hundred seventy-six".