2621370247 has 2 divisors, whose sum is σ = 2621370248. Its totient is φ = 2621370246.

The previous prime is 2621370239. The next prime is 2621370251. The reversal of 2621370247 is 7420731262.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2621370247 - 2³ = 2621370239 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2621379247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1310685123 + 1310685124.

It is an arithmetic number, because the mean of its divisors is an integer number (1310685124).

Almost surely, 2^2621370247 is an apocalyptic number.

2621370247 is a deficient number, since it is larger than the sum of its proper divisors (1).

2621370247 is an equidigital number, since it uses as much as digits as its factorization.

2621370247 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 28224, while the sum is 34.

The square root of 2621370247 is about 51199.3188138280. The cubic root of 2621370247 is about 1378.8259718340.

The spelling of 2621370247 in words is "two billion, six hundred twenty-one million, three hundred seventy thousand, two hundred forty-seven".