74381670 has 48 divisors (see below), whose sum is σ = 210976272. Its totient is φ = 18031680.

The previous prime is 74381663. The next prime is 74381677. The reversal of 74381670 is 7618347.

It is an interprime number because it is at equal distance from previous prime (74381663) and next prime (74381677).

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74381677) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 36577 + ... + 38556.

It is an arithmetic number, because the mean of its divisors is an integer number (4395339).

Almost surely, 2^74381670 is an apocalyptic number.

74381670 is an abundant number, since it is smaller than the sum of its proper divisors (136594602).

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

74381670 is a wasteful number, since it uses less digits than its factorization.

74381670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75157 (or 75154 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 36.

The square root of 74381670 is about 8624.4808539413. The cubic root of 74381670 is about 420.5542003701.

The spelling of 74381670 in words is "seventy-four million, three hundred eighty-one thousand, six hundred seventy".