74660261 has 4 divisors (see below), whose sum is σ = 80403372. Its totient is φ = 68917152.

The previous prime is 74660233. The next prime is 74660281. The reversal of 74660261 is 16206647.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 22372900 + 52287361 = 4730^2 + 7231^2 .

It is a cyclic number.

It is not a de Polignac number, because 74660261 - 2¹⁸ = 74398117 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 (74660281) 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, 2871536 + ... + 2871561.

It is an arithmetic number, because the mean of its divisors is an integer number (20100843).

Almost surely, 2^74660261 is an apocalyptic number.

It is an amenable number.

74660261 is a deficient number, since it is larger than the sum of its proper divisors (5743111).

74660261 is a wasteful number, since it uses less digits than its factorization.

74660261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5743110.

The product of its (nonzero) digits is 12096, while the sum is 32.

The square root of 74660261 is about 8640.6169339926. The cubic root of 74660261 is about 421.0785976857.

The spelling of 74660261 in words is "seventy-four million, six hundred sixty thousand, two hundred sixty-one".