2620771245 has 12 divisors (see below), whose sum is σ = 4542670236. Its totient is φ = 1397744640.

The previous prime is 2620771199. The next prime is 2620771249. The reversal of 2620771245 is 5421770262.

It is a happy number.

2620771245 is a `hidden beast` number, since 2 + 620 + 7 + 7 + 1 + 24 + 5 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 717543369 + 1903227876 = 26787^2 + 43626^2 .

It is not a de Polignac number, because 2620771245 - 2⁸ = 2620770989 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2620771249) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 29119636 + ... + 29119725.

It is an arithmetic number, because the mean of its divisors is an integer number (378555853).

Almost surely, 2^2620771245 is an apocalyptic number.

It is an amenable number.

2620771245 is a deficient number, since it is larger than the sum of its proper divisors (1921898991).

2620771245 is a wasteful number, since it uses less digits than its factorization.

2620771245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58239372 (or 58239369 counting only the distinct ones).

The product of its (nonzero) digits is 47040, while the sum is 36.

The square root of 2620771245 is about 51193.4687728816. The cubic root of 2620771245 is about 1378.7209399417.

The spelling of 2620771245 in words is "two billion, six hundred twenty million, seven hundred seventy-one thousand, two hundred forty-five".