74245915 has 4 divisors (see below), whose sum is σ = 89095104. Its totient is φ = 59396728.

The previous prime is 74245889. The next prime is 74245921. The reversal of 74245915 is 51954247.

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 74245915 - 2²¹ = 72148763 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7424587 + ... + 7424596.

It is an arithmetic number, because the mean of its divisors is an integer number (22273776).

Almost surely, 2^74245915 is an apocalyptic number.

74245915 is a deficient number, since it is larger than the sum of its proper divisors (14849189).

74245915 is a wasteful number, since it uses less digits than its factorization.

74245915 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14849188.

The product of its digits is 50400, while the sum is 37.

The square root of 74245915 is about 8616.6069308052. The cubic root of 74245915 is about 420.2981914902.

The spelling of 74245915 in words is "seventy-four million, two hundred forty-five thousand, nine hundred fifteen".