74823661 has 8 divisors (see below), whose sum is σ = 81696384. Its totient is φ = 67962720.

The previous prime is 74823641. The next prime is 74823667. The reversal of 74823661 is 16632847.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 74823661 - 2⁷ = 74823533 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 74823661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74823667) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15265 + ... + 19561.

It is an arithmetic number, because the mean of its divisors is an integer number (10212048).

Almost surely, 2^74823661 is an apocalyptic number.

It is an amenable number.

74823661 is a deficient number, since it is larger than the sum of its proper divisors (6872723).

74823661 is a wasteful number, since it uses less digits than its factorization.

74823661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5891.

The product of its digits is 48384, while the sum is 37.

The square root of 74823661 is about 8650.0671095663. The cubic root of 74823661 is about 421.3855620079.

The spelling of 74823661 in words is "seventy-four million, eight hundred twenty-three thousand, six hundred sixty-one".