208765086 has 32 divisors (see below), whose sum is σ = 432432000. Its totient is φ = 67144224.

The previous prime is 208765061. The next prime is 208765087. The reversal of 208765086 is 680567802.

It is a super-2 number, since 2×208765086² = 87165722265174792, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (208765087) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16540 + ... + 26288.

It is an arithmetic number, because the mean of its divisors is an integer number (13513500).

Almost surely, 2^208765086 is an apocalyptic number.

208765086 is an abundant number, since it is smaller than the sum of its proper divisors (223666914).

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

208765086 is a wasteful number, since it uses less digits than its factorization.

208765086 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9880.

The product of its (nonzero) digits is 161280, while the sum is 42.

The square root of 208765086 is about 14448.7053399258. The cubic root of 208765086 is about 593.2247876876.

The spelling of 208765086 in words is "two hundred eight million, seven hundred sixty-five thousand, eighty-six".