74681261 has 4 divisors (see below), whose sum is σ = 76270272. Its totient is φ = 73092252.

The previous prime is 74681249. The next prime is 74681273. The reversal of 74681261 is 16218647.

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 an interprime number because it is at equal distance from previous prime (74681249) and next prime (74681273).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-74681261 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 (74611261) 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, 794435 + ... + 794528.

It is an arithmetic number, because the mean of its divisors is an integer number (19067568).

Almost surely, 2^74681261 is an apocalyptic number.

It is an amenable number.

74681261 is a deficient number, since it is larger than the sum of its proper divisors (1589011).

74681261 is a wasteful number, since it uses less digits than its factorization.

74681261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1589010.

The product of its digits is 16128, while the sum is 35.

The square root of 74681261 is about 8641.8320395620. The cubic root of 74681261 is about 421.1180734902.

The spelling of 74681261 in words is "seventy-four million, six hundred eighty-one thousand, two hundred sixty-one".