77648212 has 18 divisors (see below), whose sum is σ = 143415258. Its totient is φ = 36780048.

The previous prime is 77648201. The next prime is 77648261. The reversal of 77648212 is 21284677.

It can be written as a sum of positive squares in only one way, i.e., 71166096 + 6482116 = 8436^2 + 2546^2 .

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 25443 + ... + 28330.

Almost surely, 2^77648212 is an apocalyptic number.

It is an amenable number.

77648212 is a deficient number, since it is larger than the sum of its proper divisors (65767046).

77648212 is a wasteful number, since it uses less digits than its factorization.

77648212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53815 (or 53794 counting only the distinct ones).

The product of its digits is 37632, while the sum is 37.

The square root of 77648212 is about 8811.8222859974. The cubic root of 77648212 is about 426.6225624442.

The spelling of 77648212 in words is "seventy-seven million, six hundred forty-eight thousand, two hundred twelve".