77675240 has 16 divisors (see below), whose sum is σ = 174769380. Its totient is φ = 31070080.

The previous prime is 77675237. The next prime is 77675267. The reversal of 77675240 is 4257677.

It can be written as a sum of positive squares in 2 ways, for example, as 71334916 + 6340324 = 8446^2 + 2518^2 .

It is a junction number, because it is equal to n+sod(n) for n = 77675194 and 77675203.

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, 970901 + ... + 970980.

Almost surely, 2^77675240 is an apocalyptic number.

It is an amenable number.

77675240 is an abundant number, since it is smaller than the sum of its proper divisors (97094140).

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

77675240 is a wasteful number, since it uses less digits than its factorization.

77675240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1941892 (or 1941888 counting only the distinct ones).

The product of its (nonzero) digits is 82320, while the sum is 38.

The square root of 77675240 is about 8813.3557740511. The cubic root of 77675240 is about 426.6720566810.

The spelling of 77675240 in words is "seventy-seven million, six hundred seventy-five thousand, two hundred forty".