74491745 has 8 divisors (see below), whose sum is σ = 89890560. Its totient is φ = 59259760.

The previous prime is 74491741. The next prime is 74491771. The reversal of 74491745 is 54719447.

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

It is not a de Polignac number, because 74491745 - 2² = 74491741 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (74491741) 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, 40721 + ... + 42510.

It is an arithmetic number, because the mean of its divisors is an integer number (11236320).

Almost surely, 2^74491745 is an apocalyptic number.

It is an amenable number.

74491745 is a deficient number, since it is larger than the sum of its proper divisors (15398815).

74491745 is a wasteful number, since it uses less digits than its factorization.

74491745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83415.

The product of its digits is 141120, while the sum is 41.

The square root of 74491745 is about 8630.8600382581. The cubic root of 74491745 is about 420.7615529198.

The spelling of 74491745 in words is "seventy-four million, four hundred ninety-one thousand, seven hundred forty-five".