650706631 has 4 divisors (see below), whose sum is σ = 654113664. Its totient is φ = 647299600.

The previous prime is 650706607. The next prime is 650706643. The reversal of 650706631 is 136607056.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 650706631 - 2⁷ = 650706503 is a prime.

It is a super-2 number, since 2×650706631² = 846838239254740322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (650706601) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1703230 + ... + 1703611.

It is an arithmetic number, because the mean of its divisors is an integer number (163528416).

Almost surely, 2^650706631 is an apocalyptic number.

650706631 is a deficient number, since it is larger than the sum of its proper divisors (3407033).

650706631 is a wasteful number, since it uses less digits than its factorization.

650706631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3407032.

The product of its (nonzero) digits is 22680, while the sum is 34.

The square root of 650706631 is about 25508.9519776881. The cubic root of 650706631 is about 866.5528949436.

It can be divided in two parts, 650 and 706631, that added together give a 4-th power (707281 = 29⁴).

The spelling of 650706631 in words is "six hundred fifty million, seven hundred six thousand, six hundred thirty-one".