2657240650 has 12 divisors (see below), whose sum is σ = 4942467702. Its totient is φ = 1062896240.

The previous prime is 2657240647. The next prime is 2657240653. The reversal of 2657240650 is 560427562.

It is an interprime number because it is at equal distance from previous prime (2657240647) and next prime (2657240653).

It can be written as a sum of positive squares in 3 ways, for example, as 1547084889 + 1110155761 = 39333^2 + 33319^2 .

It is not an unprimeable number, because it can be changed into a prime (2657240653) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 26572357 + ... + 26572456.

Almost surely, 2^2657240650 is an apocalyptic number.

2657240650 is a deficient number, since it is larger than the sum of its proper divisors (2285227052).

2657240650 is a wasteful number, since it uses less digits than its factorization.

2657240650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53144825 (or 53144820 counting only the distinct ones).

The product of its (nonzero) digits is 100800, while the sum is 37.

The square root of 2657240650 is about 51548.4301409849. The cubic root of 2657240650 is about 1385.0867110234.

It can be divided in two parts, 265 and 7240650, that added together give a triangular number (7240915 = T₃₈₀₅).

The spelling of 2657240650 in words is "two billion, six hundred fifty-seven million, two hundred forty thousand, six hundred fifty".