74162661 has 4 divisors (see below), whose sum is σ = 98883552. Its totient is φ = 49441772.

The previous prime is 74162629. The next prime is 74162701. The reversal of 74162661 is 16626147.

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 74162661 - 2⁵ = 74162629 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74162161) 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, 12360441 + ... + 12360446.

It is an arithmetic number, because the mean of its divisors is an integer number (24720888).

Almost surely, 2^74162661 is an apocalyptic number.

It is an amenable number.

74162661 is a deficient number, since it is larger than the sum of its proper divisors (24720891).

74162661 is a wasteful number, since it uses less digits than its factorization.

74162661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24720890.

The product of its digits is 12096, while the sum is 33.

The square root of 74162661 is about 8611.7745558044. The cubic root of 74162661 is about 420.1410354017.

It can be divided in two parts, 74 and 162661, that added together give a triangular number (162735 = T₅₇₀).

The spelling of 74162661 in words is "seventy-four million, one hundred sixty-two thousand, six hundred sixty-one".