77747396 has 12 divisors (see below), whose sum is σ = 138625452. Its totient is φ = 38140128.

The previous prime is 77747393. The next prime is 77747401. The reversal of 77747396 is 69374777.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 36966400 + 40780996 = 6080^2 + 6386^2 .

It is not an unprimeable number, because it can be changed into a prime (77747393) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 183155 + ... + 183578.

It is an arithmetic number, because the mean of its divisors is an integer number (11552121).

Almost surely, 2^77747396 is an apocalyptic number.

It is an amenable number.

77747396 is a deficient number, since it is larger than the sum of its proper divisors (60878056).

77747396 is a wasteful number, since it uses less digits than its factorization.

77747396 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 366790 (or 366788 counting only the distinct ones).

The product of its digits is 1555848, while the sum is 50.

The square root of 77747396 is about 8817.4483837446. The cubic root of 77747396 is about 426.8041340359.

The spelling of 77747396 in words is "seventy-seven million, seven hundred forty-seven thousand, three hundred ninety-six".