202680745 has 16 divisors (see below), whose sum is σ = 249294672. Its totient is φ = 158129920.

The previous prime is 202680727. The next prime is 202680757. The reversal of 202680745 is 547086202.

It can be written as a sum of positive squares in 8 ways, for example, as 40602384 + 162078361 = 6372^2 + 12731^2 .

It is not a de Polignac number, because 202680745 - 2⁵ = 202680713 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 202680745.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43635 + ... + 48055.

It is an arithmetic number, because the mean of its divisors is an integer number (15580917).

Almost surely, 2^202680745 is an apocalyptic number.

It is an amenable number.

202680745 is a deficient number, since it is larger than the sum of its proper divisors (46613927).

202680745 is a wasteful number, since it uses less digits than its factorization.

202680745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4652.

The product of its (nonzero) digits is 26880, while the sum is 34.

The square root of 202680745 is about 14236.5987862270. The cubic root of 202680745 is about 587.4048084793.

The spelling of 202680745 in words is "two hundred two million, six hundred eighty thousand, seven hundred forty-five".