77240613 has 8 divisors (see below), whose sum is σ = 103774176. Its totient is φ = 51100400.

The previous prime is 77240593. The next prime is 77240621. The reversal of 77240613 is 31604277.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 77240613 - 2⁶ = 77240549 is a prime.

It is a super-2 number, since 2×77240613² = 11932224593231538, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77240633) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 97878 + ... + 98663.

It is an arithmetic number, because the mean of its divisors is an integer number (12971772).

Almost surely, 2^77240613 is an apocalyptic number.

It is an amenable number.

77240613 is a deficient number, since it is larger than the sum of its proper divisors (26533563).

77240613 is a wasteful number, since it uses less digits than its factorization.

77240613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 196675.

The product of its (nonzero) digits is 7056, while the sum is 30.

The square root of 77240613 is about 8788.6638916277. The cubic root of 77240613 is about 425.8747620569.

The spelling of 77240613 in words is "seventy-seven million, two hundred forty thousand, six hundred thirteen".