726040715 has 4 divisors (see below), whose sum is σ = 871248864. Its totient is φ = 580832568.

The previous prime is 726040703. The next prime is 726040753. The reversal of 726040715 is 517040627.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 726040715 - 2²⁶ = 658931851 is a prime.

It is a super-2 number, since 2×726040715² = 1054270239675422450, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 72604067 + ... + 72604076.

It is an arithmetic number, because the mean of its divisors is an integer number (217812216).

Almost surely, 2^726040715 is an apocalyptic number.

726040715 is a deficient number, since it is larger than the sum of its proper divisors (145208149).

726040715 is a wasteful number, since it uses less digits than its factorization.

726040715 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145208148.

The product of its (nonzero) digits is 11760, while the sum is 32.

The square root of 726040715 is about 26945.1426977108. The cubic root of 726040715 is about 898.7805356632.

The spelling of 726040715 in words is "seven hundred twenty-six million, forty thousand, seven hundred fifteen".