4644064261 has 4 divisors (see below), whose sum is σ = 4720196524. Its totient is φ = 4567932000.

The previous prime is 4644064259. The next prime is 4644064277. The reversal of 4644064261 is 1624604464.

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

It can be written as a sum of positive squares in 2 ways, for example, as 2659361761 + 1984702500 = 51569^2 + 44550^2 .

It is a cyclic number.

It is not a de Polignac number, because 4644064261 - 2¹ = 4644064259 is a prime.

It is a super-2 number, since 2×4644064261² = 43134665720594952242, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 4644064261.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4644064211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38066040 + ... + 38066161.

It is an arithmetic number, because the mean of its divisors is an integer number (1180049131).

Almost surely, 2^4644064261 is an apocalyptic number.

It is an amenable number.

4644064261 is a deficient number, since it is larger than the sum of its proper divisors (76132263).

4644064261 is an equidigital number, since it uses as much as digits as its factorization.

4644064261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76132262.

The product of its (nonzero) digits is 110592, while the sum is 37.

The square root of 4644064261 is about 68147.3716367697. The cubic root of 4644064261 is about 1668.3970253247.

It can be divided in two parts, 46440642 and 61, that added together give a triangular number (46440703 = T₉₆₃₇).

The spelling of 4644064261 in words is "four billion, six hundred forty-four million, sixty-four thousand, two hundred sixty-one".