726475679 has 4 divisors (see below), whose sum is σ = 744194640. Its totient is φ = 708756720.

The previous prime is 726475667. The next prime is 726475691. The reversal of 726475679 is 976574627.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 976574627 = 7 ⋅139510661.

It is an interprime number because it is at equal distance from previous prime (726475667) and next prime (726475691).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-726475679 is a prime.

It is a super-2 number, since 2×726475679² = 1055533824357022082, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 726475679.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (726475639) 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, 8859419 + ... + 8859500.

It is an arithmetic number, because the mean of its divisors is an integer number (186048660).

Almost surely, 2^726475679 is an apocalyptic number.

726475679 is a deficient number, since it is larger than the sum of its proper divisors (17718961).

726475679 is a wasteful number, since it uses less digits than its factorization.

726475679 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17718960.

The product of its digits is 4445280, while the sum is 53.

The square root of 726475679 is about 26953.2127769585. The cubic root of 726475679 is about 898.9599834205.

The spelling of 726475679 in words is "seven hundred twenty-six million, four hundred seventy-five thousand, six hundred seventy-nine".