101644090 has 8 divisors (see below), whose sum is σ = 182959380. Its totient is φ = 40657632.

The previous prime is 101644073. The next prime is 101644111. The reversal of 101644090 is 90446101.

It can be written as a sum of positive squares in 2 ways, for example, as 93876721 + 7767369 = 9689^2 + 2787^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

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, 5082195 + ... + 5082214.

Almost surely, 2^101644090 is an apocalyptic number.

101644090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

101644090 is a deficient number, since it is larger than the sum of its proper divisors (81315290).

101644090 is a wasteful number, since it uses less digits than its factorization.

101644090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10164416.

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 101644090 is about 10081.8693703103. The cubic root of 101644090 is about 466.6887988370.

The spelling of 101644090 in words is "one hundred one million, six hundred forty-four thousand, ninety".