77630012 has 6 divisors (see below), whose sum is σ = 135852528. Its totient is φ = 38815004.

The previous prime is 77629999. The next prime is 77630023. The reversal of 77630012 is 21003677.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9703748 + ... + 9703755.

It is an arithmetic number, because the mean of its divisors is an integer number (22642088).

Almost surely, 2^77630012 is an apocalyptic number.

It is an amenable number.

77630012 is a deficient number, since it is larger than the sum of its proper divisors (58222516).

77630012 is a wasteful number, since it uses less digits than its factorization.

77630012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19407507 (or 19407505 counting only the distinct ones).

The product of its (nonzero) digits is 1764, while the sum is 26.

The square root of 77630012 is about 8810.7895219441. The cubic root of 77630012 is about 426.5892277536.

Adding to 77630012 its reverse (21003677), we get a palindrome (98633689).

The spelling of 77630012 in words is "seventy-seven million, six hundred thirty thousand, twelve".