202678645 has 16 divisors (see below), whose sum is σ = 273313152. Its totient is φ = 143161920.

The previous prime is 202678631. The next prime is 202678667. The reversal of 202678645 is 546876202.

It is not a de Polignac number, because 202678645 - 2²⁵ = 169124213 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 202678598 and 202678607.

It is a congruent number.

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, 66291 + ... + 69280.

It is an arithmetic number, because the mean of its divisors is an integer number (17082072).

Almost surely, 2^202678645 is an apocalyptic number.

It is an amenable number.

202678645 is a deficient number, since it is larger than the sum of its proper divisors (70634507).

202678645 is a wasteful number, since it uses less digits than its factorization.

202678645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135612.

The product of its (nonzero) digits is 161280, while the sum is 40.

The square root of 202678645 is about 14236.5250324649. The cubic root of 202678645 is about 587.4027797480.

The spelling of 202678645 in words is "two hundred two million, six hundred seventy-eight thousand, six hundred forty-five".