2620401547 has 2 divisors, whose sum is σ = 2620401548. Its totient is φ = 2620401546.

The previous prime is 2620401479. The next prime is 2620401577. The reversal of 2620401547 is 7451040262.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2620401547 - 2³¹ = 472917899 is a prime.

It is not a weakly prime, because it can be changed into another prime (2620401577) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1310200773 + 1310200774.

It is an arithmetic number, because the mean of its divisors is an integer number (1310200774).

Almost surely, 2^2620401547 is an apocalyptic number.

2620401547 is a deficient number, since it is larger than the sum of its proper divisors (1).

2620401547 is an equidigital number, since it uses as much as digits as its factorization.

2620401547 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13440, while the sum is 31.

The square root of 2620401547 is about 51189.8578528989. The cubic root of 2620401547 is about 1378.6561073287.

The spelling of 2620401547 in words is "two billion, six hundred twenty million, four hundred one thousand, five hundred forty-seven".