650001090 has 16 divisors (see below), whose sum is σ = 1560002688. Its totient is φ = 173333616.

The previous prime is 650001073. The next prime is 650001097. The reversal of 650001090 is 90100056.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (650001097) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10833322 + ... + 10833381.

It is an arithmetic number, because the mean of its divisors is an integer number (97500168).

Almost surely, 2^650001090 is an apocalyptic number.

650001090 is an abundant number, since it is smaller than the sum of its proper divisors (910001598).

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

650001090 is a wasteful number, since it uses less digits than its factorization.

650001090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21666713.

The product of its (nonzero) digits is 270, while the sum is 21.

The square root of 650001090 is about 25495.1189446137. The cubic root of 650001090 is about 866.2395895461.

The spelling of 650001090 in words is "six hundred fifty million, one thousand, ninety".