77242612 has 6 divisors (see below), whose sum is σ = 135174578. Its totient is φ = 38621304.

The previous prime is 77242609. The next prime is 77242637. The reversal of 77242612 is 21624277.

It can be written as a sum of positive squares in only one way, i.e., 59043856 + 18198756 = 7684^2 + 4266^2 .

It is a super-2 number, since 2×77242612² = 11932842217165088, which contains 22 as substring.

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, 9655323 + ... + 9655330.

Almost surely, 2^77242612 is an apocalyptic number.

It is an amenable number.

77242612 is a deficient number, since it is larger than the sum of its proper divisors (57931966).

77242612 is a wasteful number, since it uses less digits than its factorization.

77242612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19310657 (or 19310655 counting only the distinct ones).

The product of its digits is 9408, while the sum is 31.

The square root of 77242612 is about 8788.7776169385. Note that the first 3 decimals coincide. The cubic root of 77242612 is about 425.8784359286.

Adding to 77242612 its reverse (21624277), we get a palindrome (98866889).

The spelling of 77242612 in words is "seventy-seven million, two hundred forty-two thousand, six hundred twelve".