74688949 has 8 divisors (see below), whose sum is σ = 78532920. Its totient is φ = 70929600.

The previous prime is 74688907. The next prime is 74688953. The reversal of 74688949 is 94988647.

It can be written as a sum of positive squares in 4 ways, for example, as 12830724 + 61858225 = 3582^2 + 7865^2 .

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 74688949 - 2⁷ = 74688821 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 74688949.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74688959) 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, 19342 + ... + 22879.

It is an arithmetic number, because the mean of its divisors is an integer number (9816615).

Almost surely, 2^74688949 is an apocalyptic number.

It is an amenable number.

74688949 is a deficient number, since it is larger than the sum of its proper divisors (3843971).

74688949 is a wasteful number, since it uses less digits than its factorization.

74688949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42311.

The product of its digits is 3483648, while the sum is 55.

The square root of 74688949 is about 8642.2768412034. The cubic root of 74688949 is about 421.1325235437.

The spelling of 74688949 in words is "seventy-four million, six hundred eighty-eight thousand, nine hundred forty-nine".