426513645 has 24 divisors (see below), whose sum is σ = 742536600. Its totient is φ = 226475136.

The previous prime is 426513617. The next prime is 426513671. The reversal of 426513645 is 546315624.

426513645 is a `hidden beast` number, since 4 + 2 + 6 + 5 + 1 + 3 + 645 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 170929476 + 255584169 = 13074^2 + 15987^2 .

It is not a de Polignac number, because 426513645 - 2¹⁶ = 426448109 is a prime.

It is a super-3 number, since 3×426513645³ (a number of 27 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10390 + ... + 30999.

It is an arithmetic number, because the mean of its divisors is an integer number (30939025).

Almost surely, 2^426513645 is an apocalyptic number.

426513645 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

426513645 is a deficient number, since it is larger than the sum of its proper divisors (316022955).

426513645 is a wasteful number, since it uses less digits than its factorization.

426513645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41629 (or 41626 counting only the distinct ones).

The product of its digits is 86400, while the sum is 36.

The square root of 426513645 is about 20652.2067828114. The cubic root of 426513645 is about 752.7388130300.

The spelling of 426513645 in words is "four hundred twenty-six million, five hundred thirteen thousand, six hundred forty-five".