71660700 has 126 divisors (see below), whose sum is σ = 233386104. Its totient is φ = 19090080.

The previous prime is 71660689. The next prime is 71660713. The reversal of 71660700 is 706617.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 41 ways as a sum of consecutive naturals, for example, 72409 + ... + 73391.

Almost surely, 2^71660700 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 71660700, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (116693052).

71660700 is an abundant number, since it is smaller than the sum of its proper divisors (161725404).

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

71660700 is a wasteful number, since it uses less digits than its factorization.

71660700 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1015 (or 993 counting only the distinct ones).

The product of its (nonzero) digits is 1764, while the sum is 27.

The square root of 71660700 is about 8465.2643195591. The cubic root of 71660700 is about 415.3622423847.

It can be divided in two parts, 716 and 60700, that added together give a palindrome (61416).

The spelling of 71660700 in words is "seventy-one million, six hundred sixty thousand, seven hundred".