74245864 has 64 divisors (see below), whose sum is σ = 177661440. Its totient is φ = 28244160.

The previous prime is 74245861. The next prime is 74245879. The reversal of 74245864 is 46854247.

It is a happy number.

It is a super-2 number, since 2×74245864² = 11024896642212992, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (74245861) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25087 + ... + 27889.

It is an arithmetic number, because the mean of its divisors is an integer number (2775960).

Almost surely, 2^74245864 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 74245864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (88830720).

74245864 is an abundant number, since it is smaller than the sum of its proper divisors (103415576).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

74245864 is a wasteful number, since it uses less digits than its factorization.

74245864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2870 (or 2866 counting only the distinct ones).

The product of its digits is 215040, while the sum is 40.

The square root of 74245864 is about 8616.6039714031. The cubic root of 74245864 is about 420.2980952550.

The spelling of 74245864 in words is "seventy-four million, two hundred forty-five thousand, eight hundred sixty-four".