71388670 has 8 divisors (see below), whose sum is σ = 128499624. Its totient is φ = 28555464.

The previous prime is 71388631. The next prime is 71388673. The reversal of 71388670 is 7688317.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71388673) 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, 3569424 + ... + 3569443.

It is an arithmetic number, because the mean of its divisors is an integer number (16062453).

Almost surely, 2^71388670 is an apocalyptic number.

71388670 is a deficient number, since it is larger than the sum of its proper divisors (57110954).

71388670 is a wasteful number, since it uses less digits than its factorization.

71388670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7138874.

The product of its (nonzero) digits is 56448, while the sum is 40.

The square root of 71388670 is about 8449.1816171745. The cubic root of 71388670 is about 414.8359926761.

The spelling of 71388670 in words is "seventy-one million, three hundred eighty-eight thousand, six hundred seventy".