74947315 has 4 divisors (see below), whose sum is σ = 89936784. Its totient is φ = 59957848.

The previous prime is 74947309. The next prime is 74947319. The reversal of 74947315 is 51374947.

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 74947315 - 2³ = 74947307 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (74947319) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7494727 + ... + 7494736.

It is an arithmetic number, because the mean of its divisors is an integer number (22484196).

Almost surely, 2^74947315 is an apocalyptic number.

74947315 is a deficient number, since it is larger than the sum of its proper divisors (14989469).

74947315 is a wasteful number, since it uses less digits than its factorization.

74947315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14989468.

The product of its digits is 105840, while the sum is 40.

The square root of 74947315 is about 8657.2117335780. The cubic root of 74947315 is about 421.6175622975.

The spelling of 74947315 in words is "seventy-four million, nine hundred forty-seven thousand, three hundred fifteen".