77653372 has 6 divisors (see below), whose sum is σ = 135893408. Its totient is φ = 38826684.

The previous prime is 77653369. The next prime is 77653379. The reversal of 77653372 is 27335677.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77653379) 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 as a sum of consecutive naturals, namely, 9706668 + ... + 9706675.

Almost surely, 2^77653372 is an apocalyptic number.

It is an amenable number.

77653372 is a deficient number, since it is larger than the sum of its proper divisors (58240036).

77653372 is a wasteful number, since it uses less digits than its factorization.

77653372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19413347 (or 19413345 counting only the distinct ones).

The product of its digits is 185220, while the sum is 40.

The square root of 77653372 is about 8812.1150696073. The cubic root of 77653372 is about 426.6320124307.

The spelling of 77653372 in words is "seventy-seven million, six hundred fifty-three thousand, three hundred seventy-two".