77632893 has 12 divisors (see below), whose sum is σ = 120762460. Its totient is φ = 47774016.

The previous prime is 77632871. The next prime is 77632903. The reversal of 77632893 is 39823677.

It is a happy number.

77632893 is a `hidden beast` number, since 7 + 7 + 632 + 8 + 9 + 3 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 6365529 + 71267364 = 2523^2 + 8442^2 .

It is not a de Polignac number, because 77632893 - 2⁸ = 77632637 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77632813) 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, 331648 + ... + 331881.

Almost surely, 2^77632893 is an apocalyptic number.

It is an amenable number.

77632893 is a deficient number, since it is larger than the sum of its proper divisors (43129567).

77632893 is a wasteful number, since it uses less digits than its factorization.

77632893 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 663548 (or 663545 counting only the distinct ones).

The product of its digits is 381024, while the sum is 45.

The square root of 77632893 is about 8810.9530131536. The cubic root of 77632893 is about 426.5945048723.

The spelling of 77632893 in words is "seventy-seven million, six hundred thirty-two thousand, eight hundred ninety-three".