872411647 has 2 divisors, whose sum is σ = 872411648. Its totient is φ = 872411646.

The previous prime is 872411633. The next prime is 872411663. The reversal of 872411647 is 746114278.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-872411647 is a prime.

It is a super-2 number, since 2×872411647² = 1522204163642505218, which contains 22 as substring.

It is a zygodrome in base 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (872471647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 436205823 + 436205824.

It is an arithmetic number, because the mean of its divisors is an integer number (436205824).

Almost surely, 2^872411647 is an apocalyptic number.

872411647 is a deficient number, since it is larger than the sum of its proper divisors (1).

872411647 is an equidigital number, since it uses as much as digits as its factorization.

872411647 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 75264, while the sum is 40.

The square root of 872411647 is about 29536.6153612766. The cubic root of 872411647 is about 955.5215473059.

It can be divided in two parts, 87241 and 1647, that added together give a palindrome (88888).

The spelling of 872411647 in words is "eight hundred seventy-two million, four hundred eleven thousand, six hundred forty-seven".