77973652 has 24 divisors (see below), whose sum is σ = 140767200. Its totient is φ = 37764000.

The previous prime is 77973631. The next prime is 77973659. The reversal of 77973652 is 25637977.

It is a happy number.

It is a super-3 number, since 3×77973652³ (a number of 25 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77973659) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36099 + ... + 38197.

It is an arithmetic number, because the mean of its divisors is an integer number (5865300).

Almost surely, 2^77973652 is an apocalyptic number.

It is an amenable number.

77973652 is a deficient number, since it is larger than the sum of its proper divisors (62793548).

77973652 is a wasteful number, since it uses less digits than its factorization.

77973652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2391 (or 2389 counting only the distinct ones).

The product of its digits is 555660, while the sum is 46.

The square root of 77973652 is about 8830.2690785729. The cubic root of 77973652 is about 427.2177533454.

It can be divided in two parts, 7797 and 3652, that added together give a square (11449 = 107²).

The spelling of 77973652 in words is "seventy-seven million, nine hundred seventy-three thousand, six hundred fifty-two".