71402664 has 16 divisors (see below), whose sum is σ = 178506720. Its totient is φ = 23800880.

The previous prime is 71402663. The next prime is 71402699. The reversal of 71402664 is 46620417.

It is not an unprimeable number, because it can be changed into a prime (71402663) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1487532 + ... + 1487579.

It is an arithmetic number, because the mean of its divisors is an integer number (11156670).

Almost surely, 2^71402664 is an apocalyptic number.

It is an amenable number.

71402664 is an abundant number, since it is smaller than the sum of its proper divisors (107104056).

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

71402664 is a wasteful number, since it uses less digits than its factorization.

71402664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2975120 (or 2975116 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 30.

The square root of 71402664 is about 8450.0097041364. The cubic root of 71402664 is about 414.8630970499.

The spelling of 71402664 in words is "seventy-one million, four hundred two thousand, six hundred sixty-four".