74901613 has 4 divisors (see below), whose sum is σ = 74921760. Its totient is φ = 74881468.

The previous prime is 74901583. The next prime is 74901637. The reversal of 74901613 is 31610947.

It is a happy number.

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 74901613 - 2¹⁷ = 74770541 is a prime.

It is a super-2 number, since 2×74901613² = 11220503260003538, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74901683) 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, 2695 + ... + 12532.

It is an arithmetic number, because the mean of its divisors is an integer number (18730440).

Almost surely, 2^74901613 is an apocalyptic number.

It is an amenable number.

74901613 is a deficient number, since it is larger than the sum of its proper divisors (20147).

74901613 is a wasteful number, since it uses less digits than its factorization.

74901613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20146.

The product of its (nonzero) digits is 4536, while the sum is 31.

The square root of 74901613 is about 8654.5717976108. The cubic root of 74901613 is about 421.5318457121.

The spelling of 74901613 in words is "seventy-four million, nine hundred one thousand, six hundred thirteen".