77235412 has 12 divisors (see below), whose sum is σ = 135344916. Its totient is φ = 38565440.

The previous prime is 77235409. The next prime is 77235419. The reversal of 77235412 is 21453277.

It can be written as a sum of positive squares in 2 ways, for example, as 427716 + 76807696 = 654^2 + 8764^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77235419) 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 3 ways as a sum of consecutive naturals, for example, 9643 + ... + 15730.

It is an arithmetic number, because the mean of its divisors is an integer number (11278743).

Almost surely, 2^77235412 is an apocalyptic number.

It is an amenable number.

77235412 is a deficient number, since it is larger than the sum of its proper divisors (58109504).

77235412 is a wasteful number, since it uses less digits than its factorization.

77235412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26138 (or 26136 counting only the distinct ones).

The product of its digits is 11760, while the sum is 31.

The square root of 77235412 is about 8788.3679941159. The cubic root of 77235412 is about 425.8652030772.

Adding to 77235412 its reverse (21453277), we get a palindrome (98688689).

The spelling of 77235412 in words is "seventy-seven million, two hundred thirty-five thousand, four hundred twelve".