2069908557 has 4 divisors (see below), whose sum is σ = 2759878080. Its totient is φ = 1379939036.

The previous prime is 2069908549. The next prime is 2069908571. The reversal of 2069908557 is 7558099602.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2069908557 - 2³ = 2069908549 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2069908517) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 344984757 + ... + 344984762.

It is an arithmetic number, because the mean of its divisors is an integer number (689969520).

Almost surely, 2^2069908557 is an apocalyptic number.

It is an amenable number.

2069908557 is a deficient number, since it is larger than the sum of its proper divisors (689969523).

2069908557 is an equidigital number, since it uses as much as digits as its factorization.

2069908557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 689969522.

The product of its (nonzero) digits is 1360800, while the sum is 51.

The square root of 2069908557 is about 45496.2477244003. The cubic root of 2069908557 is about 1274.4331314739.

The spelling of 2069908557 in words is "two billion, sixty-nine million, nine hundred eight thousand, five hundred fifty-seven".