71737974 has 144 divisors (see below), whose sum is σ = 204062976. Its totient is φ = 18370800.

The previous prime is 71737957. The next prime is 71737993. The reversal of 71737974 is 47973717.

It is a Curzon number.

It is a zygodrome in base 3.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 1010359 + ... + 1010429.

It is an arithmetic number, because the mean of its divisors is an integer number (1417104).

Almost surely, 2^71737974 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 71737974, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (102031488).

71737974 is an abundant number, since it is smaller than the sum of its proper divisors (132325002).

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

71737974 is an equidigital number, since it uses as much as digits as its factorization.

71737974 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115 (or 94 counting only the distinct ones).

The product of its digits is 259308, while the sum is 45.

The square root of 71737974 is about 8469.8272709660. The cubic root of 71737974 is about 415.5114881678.

The spelling of 71737974 in words is "seventy-one million, seven hundred thirty-seven thousand, nine hundred seventy-four".