2520416685 has 24 divisors (see below), whose sum is σ = 4283843616. Its totient is φ = 1265148160.

The previous prime is 2520416681. The next prime is 2520416699. The reversal of 2520416685 is 5866140252.

It is not a de Polignac number, because 2520416685 - 2² = 2520416681 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2520416681) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 286371 + ... + 295040.

It is an arithmetic number, because the mean of its divisors is an integer number (178493484).

Almost surely, 2^2520416685 is an apocalyptic number.

It is an amenable number.

2520416685 is a deficient number, since it is larger than the sum of its proper divisors (1763426931).

2520416685 is a wasteful number, since it uses less digits than its factorization.

2520416685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 581453 (or 581436 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 39.

The square root of 2520416685 is about 50203.7517024375. The cubic root of 2520416685 is about 1360.8934233725.

The spelling of 2520416685 in words is "two billion, five hundred twenty million, four hundred sixteen thousand, six hundred eighty-five".