77002012 has 6 divisors (see below), whose sum is σ = 134753528. Its totient is φ = 38501004.

The previous prime is 77002007. The next prime is 77002019. The reversal of 77002012 is 21020077.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77002019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9625248 + ... + 9625255.

Almost surely, 2^77002012 is an apocalyptic number.

It is an amenable number.

77002012 is a deficient number, since it is larger than the sum of its proper divisors (57751516).

77002012 is a wasteful number, since it uses less digits than its factorization.

77002012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19250507 (or 19250505 counting only the distinct ones).

The product of its (nonzero) digits is 196, while the sum is 19.

The square root of 77002012 is about 8775.0790309831. The cubic root of 77002012 is about 425.4357919743.

Adding to 77002012 its reverse (21020077), we get a palindrome (98022089).

The spelling of 77002012 in words is "seventy-seven million, two thousand, twelve".