626826461 has 4 divisors (see below), whose sum is σ = 631033500. Its totient is φ = 622619424.

The previous prime is 626826439. The next prime is 626826467. The reversal of 626826461 is 164628626.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 164628626 = 2 ⋅82314313.

It can be written as a sum of positive squares in 2 ways, for example, as 204318436 + 422508025 = 14294^2 + 20555^2 .

It is a cyclic number.

It is not a de Polignac number, because 626826461 - 2²⁶ = 559717597 is a prime.

It is a super-2 number, since 2×626826461² = 785822824419569042, 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 (626826467) 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, 2103296 + ... + 2103593.

It is an arithmetic number, because the mean of its divisors is an integer number (157758375).

Almost surely, 2^626826461 is an apocalyptic number.

It is an amenable number.

626826461 is a deficient number, since it is larger than the sum of its proper divisors (4207039).

626826461 is a wasteful number, since it uses less digits than its factorization.

626826461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4207038.

The product of its digits is 165888, while the sum is 41.

The square root of 626826461 is about 25036.5025712458. The cubic root of 626826461 is about 855.8200178596.

The spelling of 626826461 in words is "six hundred twenty-six million, eight hundred twenty-six thousand, four hundred sixty-one".