2562463661 has 4 divisors (see below), whose sum is σ = 2604471324. Its totient is φ = 2520456000.

The previous prime is 2562463643. The next prime is 2562463679. The reversal of 2562463661 is 1663642652.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (2562463643) and next prime (2562463679).

It can be written as a sum of positive squares in 2 ways, for example, as 465739561 + 2096724100 = 21581^2 + 45790^2 .

It is a cyclic number.

It is not a de Polignac number, because 2562463661 - 2¹⁸ = 2562201517 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2562463061) 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, 21003740 + ... + 21003861.

It is an arithmetic number, because the mean of its divisors is an integer number (651117831).

Almost surely, 2^2562463661 is an apocalyptic number.

It is an amenable number.

2562463661 is a deficient number, since it is larger than the sum of its proper divisors (42007663).

2562463661 is an equidigital number, since it uses as much as digits as its factorization.

2562463661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42007662.

The product of its digits is 311040, while the sum is 41.

The square root of 2562463661 is about 50620.7828959608. The cubic root of 2562463661 is about 1368.4194500863.

The spelling of 2562463661 in words is "two billion, five hundred sixty-two million, four hundred sixty-three thousand, six hundred sixty-one".