101070640 has 80 divisors (see below), whose sum is σ = 262411776. Its totient is φ = 35884800.

The previous prime is 101070623. The next prime is 101070659. The reversal of 101070640 is 46070101.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (80).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36505 + ... + 39175.

Almost surely, 2^101070640 is an apocalyptic number.

101070640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 101070640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (131205888).

101070640 is an abundant number, since it is smaller than the sum of its proper divisors (161341136).

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

101070640 is a wasteful number, since it uses less digits than its factorization.

101070640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2738 (or 2732 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 19.

The square root of 101070640 is about 10053.3894781810. The cubic root of 101070640 is about 465.8094968156.

The spelling of 101070640 in words is "one hundred one million, seventy thousand, six hundred forty".