74250981 has 24 divisors (see below), whose sum is σ = 125428160. Its totient is φ = 41440896.

The previous prime is 74250973. The next prime is 74251003. The reversal of 74250981 is 18905247.

74250981 is a `hidden beast` number, since 74 + 2 + 509 + 81 = 666.

It is not a de Polignac number, because 74250981 - 2³ = 74250973 is a prime.

It is a super-2 number, since 2×74250981² = 11026416358924722, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74250581) 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, 10996 + ... + 16413.

Almost surely, 2^74250981 is an apocalyptic number.

It is an amenable number.

74250981 is a deficient number, since it is larger than the sum of its proper divisors (51177179).

74250981 is a wasteful number, since it uses less digits than its factorization.

74250981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27465 (or 27462 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 36.

The square root of 74250981 is about 8616.9008930125. The cubic root of 74250981 is about 420.3077506343.

The spelling of 74250981 in words is "seventy-four million, two hundred fifty thousand, nine hundred eighty-one".