650620744 has 8 divisors (see below), whose sum is σ = 1219913910. Its totient is φ = 325310368.

The previous prime is 650620741. The next prime is 650620793. The reversal of 650620744 is 447026056.

It can be written as a sum of positive squares in only one way, i.e., 555167844 + 95452900 = 23562^2 + 9770^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×650620744² = 846614705046227072, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (650620741) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40663789 + ... + 40663804.

Almost surely, 2^650620744 is an apocalyptic number.

It is an amenable number.

650620744 is a deficient number, since it is larger than the sum of its proper divisors (569293166).

650620744 is a wasteful number, since it uses less digits than its factorization.

650620744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81327599 (or 81327595 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 34.

The square root of 650620744 is about 25507.2684543053. The cubic root of 650620744 is about 866.5147677244.

The spelling of 650620744 in words is "six hundred fifty million, six hundred twenty thousand, seven hundred forty-four".