724969087 has 4 divisors (see below), whose sum is σ = 725036400. Its totient is φ = 724901776.

The previous prime is 724969051. The next prime is 724969099. The reversal of 724969087 is 780969427.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 780969427 = 7 ⋅111567061.

It is a 4-Lehmer number, since φ(724969087) divides (724969087-1)⁴.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-724969087 is a prime.

It is a super-2 number, since 2×724969087² = 1051160354211227138, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (724969027) 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, 13462 + ... + 40387.

It is an arithmetic number, because the mean of its divisors is an integer number (181259100).

It is a Poulet number, since it divides 2^724969086-1.

Almost surely, 2^724969087 is an apocalyptic number.

724969087 is the 13463-rd decagonal number.

724969087 is a deficient number, since it is larger than the sum of its proper divisors (67313).

724969087 is a wasteful number, since it uses less digits than its factorization.

724969087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67312.

The product of its (nonzero) digits is 1524096, while the sum is 52.

The square root of 724969087 is about 26925.2499895544. The cubic root of 724969087 is about 898.3381212424.

The spelling of 724969087 in words is "seven hundred twenty-four million, nine hundred sixty-nine thousand, eighty-seven".