77130566 has 16 divisors (see below), whose sum is σ = 117803808. Its totient is φ = 37867200.

The previous prime is 77130527. The next prime is 77130577. The reversal of 77130566 is 66503177.

It is a super-2 number, since 2×77130566² = 11898248422960712, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 38936 + ... + 40868.

It is an arithmetic number, because the mean of its divisors is an integer number (7362738).

Almost surely, 2^77130566 is an apocalyptic number.

77130566 is a deficient number, since it is larger than the sum of its proper divisors (40673242).

77130566 is a wasteful number, since it uses less digits than its factorization.

77130566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2287.

The product of its (nonzero) digits is 26460, while the sum is 35.

The square root of 77130566 is about 8782.4009245764. The cubic root of 77130566 is about 425.6724137801.

The spelling of 77130566 in words is "seventy-seven million, one hundred thirty thousand, five hundred sixty-six".