77630216 has 32 divisors (see below), whose sum is σ = 152112600. Its totient is φ = 37094400.

The previous prime is 77630183. The next prime is 77630239. The reversal of 77630216 is 61203677.

It can be written as a sum of positive squares in 4 ways, for example, as 75516100 + 2114116 = 8690^2 + 1454^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21776 + ... + 25088.

Almost surely, 2^77630216 is an apocalyptic number.

It is an amenable number.

77630216 is a deficient number, since it is larger than the sum of its proper divisors (74482384).

77630216 is a wasteful number, since it uses less digits than its factorization.

77630216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3449 (or 3445 counting only the distinct ones).

The product of its (nonzero) digits is 10584, while the sum is 32.

The square root of 77630216 is about 8810.8010986516. The cubic root of 77630216 is about 426.5896014241.

The spelling of 77630216 in words is "seventy-seven million, six hundred thirty thousand, two hundred sixteen".