71409974 has 16 divisors (see below), whose sum is σ = 109832112. Its totient is φ = 34807968.

The previous prime is 71409973. The next prime is 71409991. The reversal of 71409974 is 47990417.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71409973) 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, 15212 + ... + 19344.

It is an arithmetic number, because the mean of its divisors is an integer number (6864507).

Almost surely, 2^71409974 is an apocalyptic number.

71409974 is a deficient number, since it is larger than the sum of its proper divisors (38422138).

71409974 is a wasteful number, since it uses less digits than its factorization.

71409974 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4351.

The product of its (nonzero) digits is 63504, while the sum is 41.

The square root of 71409974 is about 8450.4422369483. The cubic root of 71409974 is about 414.8772540649.

The spelling of 71409974 in words is "seventy-one million, four hundred nine thousand, nine hundred seventy-four".