426711649 has 27 divisors (see below), whose sum is σ = 539877267. Its totient is φ = 336130704.

The previous prime is 426711643. The next prime is 426711667. The reversal of 426711649 is 946117624.

The square root of 426711649 is 20657.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 63123025 + 363588624 = 7945^2 + 19068^2 .

It is not a de Polignac number, because 426711649 - 2²⁵ = 393157217 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (426711643) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 1879674 + ... + 1879900.

Almost surely, 2^426711649 is an apocalyptic number.

426711649 is a gapful number since it is divisible by the number (49) formed by its first and last digit.

426711649 is the 20657-th square number.

426711649 is the 10329-th centered octagonal number.

It is an amenable number.

426711649 is a deficient number, since it is larger than the sum of its proper divisors (113165618).

426711649 is an equidigital number, since it uses as much as digits as its factorization.

426711649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 494 (or 247 counting only the distinct ones).

The product of its digits is 72576, while the sum is 40.

The cubic root of 426711649 is about 752.8552784228.

The spelling of 426711649 in words is "four hundred twenty-six million, seven hundred eleven thousand, six hundred forty-nine".