206620624 has 20 divisors (see below), whose sum is σ = 457517344. Its totient is φ = 88551648.

The previous prime is 206620591. The next prime is 206620639. The reversal of 206620624 is 426026602.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a junction number, because it is equal to n+sod(n) for n = 206620592 and 206620601.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 922302 + ... + 922525.

Almost surely, 2^206620624 is an apocalyptic number.

It is an amenable number.

206620624 is an abundant number, since it is smaller than the sum of its proper divisors (250896720).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

206620624 is a wasteful number, since it uses less digits than its factorization.

206620624 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1844842 (or 1844836 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 28.

The square root of 206620624 is about 14374.3042962086. The cubic root of 206620624 is about 591.1865654314.

The spelling of 206620624 in words is "two hundred six million, six hundred twenty thousand, six hundred twenty-four".