715721371 has 8 divisors (see below), whose sum is σ = 718611264. Its totient is φ = 712838280.

The previous prime is 715721341. The next prime is 715721407. The reversal of 715721371 is 173127517.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 715721371 - 2²³ = 707332763 is a prime.

It is a super-2 number, since 2×715721371² = 1024514161812239282, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (715721341) 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, 314580 + ... + 316846.

It is an arithmetic number, because the mean of its divisors is an integer number (89826408).

Almost surely, 2^715721371 is an apocalyptic number.

715721371 is a deficient number, since it is larger than the sum of its proper divisors (2889893).

715721371 is a wasteful number, since it uses less digits than its factorization.

715721371 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3401.

The product of its digits is 10290, while the sum is 34.

The square root of 715721371 is about 26752.9693865933. The cubic root of 715721371 is about 894.5020256552.

Adding to 715721371 its reverse (173127517), we get a palindrome (888848888).

The spelling of 715721371 in words is "seven hundred fifteen million, seven hundred twenty-one thousand, three hundred seventy-one".