640150707 has 16 divisors (see below), whose sum is σ = 979523072. Its totient is φ = 364279680.

The previous prime is 640150703. The next prime is 640150723. The reversal of 640150707 is 707051046.

It is a happy number.

It is not a de Polignac number, because 640150707 - 2² = 640150703 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (640150703) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 58183 + ... + 68304.

It is an arithmetic number, because the mean of its divisors is an integer number (61220192).

Almost surely, 2^640150707 is an apocalyptic number.

640150707 is a deficient number, since it is larger than the sum of its proper divisors (339372365).

640150707 is a wasteful number, since it uses less digits than its factorization.

640150707 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126738.

The product of its (nonzero) digits is 5880, while the sum is 30.

The square root of 640150707 is about 25301.1997146380. The cubic root of 640150707 is about 861.8415141182.

The spelling of 640150707 in words is "six hundred forty million, one hundred fifty thousand, seven hundred seven".