74651 has 4 divisors (see below), whose sum is σ = 78600. Its totient is φ = 70704.

The previous prime is 74623. The next prime is 74653. The reversal of 74651 is 15647.

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

It is a cyclic number.

It is not a de Polignac number, because 74651 - 2⁶ = 74587 is a prime.

It is a Duffinian number.

It is a plaindrome in base 6, base 9 and base 16.

It is not an unprimeable number, because it can be changed into a prime (74653) 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, 1946 + ... + 1983.

It is an arithmetic number, because the mean of its divisors is an integer number (19650).

2⁷⁴⁶⁵¹ is an apocalyptic number.

74651 is a deficient number, since it is larger than the sum of its proper divisors (3949).

74651 is a wasteful number, since it uses less digits than its factorization.

74651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3948.

The product of its digits is 840, while the sum is 23.

The square root of 74651 is about 273.2233518570. The cubic root of 74651 is about 42.1061186504.

It can be divided in two parts, 746 and 51, that added together give a palindrome (797).

The spelling of 74651 in words is "seventy-four thousand, six hundred fifty-one".