2601652640 has 48 divisors (see below), whose sum is σ = 6358360680. Its totient is φ = 1004774400.

The previous prime is 2601652639. The next prime is 2601652643. The reversal of 2601652640 is 462561062.

It can be written as a sum of positive squares in 4 ways, for example, as 1830812944 + 770839696 = 42788^2 + 27764^2 .

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a junction number, because it is equal to n+sod(n) for n = 2601652597 and 2601652606.

It is not an unprimeable number, because it can be changed into a prime (2601652643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 275711 + ... + 284990.

Almost surely, 2^2601652640 is an apocalyptic number.

2601652640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2601652640 is an abundant number, since it is smaller than the sum of its proper divisors (3756708040).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2601652640 is a wasteful number, since it uses less digits than its factorization.

2601652640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 560745 (or 560737 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 32.

The square root of 2601652640 is about 51006.3980300511. The cubic root of 2601652640 is about 1375.3601507271.

The spelling of 2601652640 in words is "two billion, six hundred one million, six hundred fifty-two thousand, six hundred forty".