74776613 has 4 divisors (see below), whose sum is σ = 76515648. Its totient is φ = 73037580.

The previous prime is 74776607. The next prime is 74776631. The reversal of 74776613 is 31667747.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 74776613 - 2¹⁴ = 74760229 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74776673) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 869453 + ... + 869538.

It is an arithmetic number, because the mean of its divisors is an integer number (19128912).

Almost surely, 2^74776613 is an apocalyptic number.

It is an amenable number.

74776613 is a deficient number, since it is larger than the sum of its proper divisors (1739035).

74776613 is a wasteful number, since it uses less digits than its factorization.

74776613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1739034.

The product of its digits is 148176, while the sum is 41.

The square root of 74776613 is about 8647.3471654606. The cubic root of 74776613 is about 421.2972231750.

The spelling of 74776613 in words is "seventy-four million, seven hundred seventy-six thousand, six hundred thirteen".