77870552 has 8 divisors (see below), whose sum is σ = 146007300. Its totient is φ = 38935272.

The previous prime is 77870503. The next prime is 77870561. The reversal of 77870552 is 25507877.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4866902 + ... + 4866917.

Almost surely, 2^77870552 is an apocalyptic number.

It is an amenable number.

77870552 is a deficient number, since it is larger than the sum of its proper divisors (68136748).

77870552 is a wasteful number, since it uses less digits than its factorization.

77870552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9733825 (or 9733821 counting only the distinct ones).

The product of its (nonzero) digits is 137200, while the sum is 41.

The square root of 77870552 is about 8824.4292733298. The cubic root of 77870552 is about 427.0293752769.

The spelling of 77870552 in words is "seventy-seven million, eight hundred seventy thousand, five hundred fifty-two".