715384561 has 4 divisors (see below), whose sum is σ = 753036400. Its totient is φ = 677732724.

The previous prime is 715384547. The next prime is 715384567. The reversal of 715384561 is 165483517.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 165483517 = 2293 ⋅72169.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-715384561 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (715384567) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18825891 + ... + 18825928.

It is an arithmetic number, because the mean of its divisors is an integer number (188259100).

Almost surely, 2^715384561 is an apocalyptic number.

It is an amenable number.

715384561 is a deficient number, since it is larger than the sum of its proper divisors (37651839).

715384561 is a wasteful number, since it uses less digits than its factorization.

715384561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37651838.

The product of its digits is 100800, while the sum is 40.

The square root of 715384561 is about 26746.6738305906. The cubic root of 715384561 is about 894.3616896199.

The spelling of 715384561 in words is "seven hundred fifteen million, three hundred eighty-four thousand, five hundred sixty-one".