650774940 has 96 divisors (see below), whose sum is σ = 1900867584. Its totient is φ = 166164480.

The previous prime is 650774923. The next prime is 650774941. The reversal of 650774940 is 49477056.

It is a junction number, because it is equal to n+sod(n) for n = 650774892 and 650774901.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (650774941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 178617 + ... + 182223.

It is an arithmetic number, because the mean of its divisors is an integer number (19800704).

Almost surely, 2^650774940 is an apocalyptic number.

650774940 is a gapful number since it is divisible by the number (60) 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 650774940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (950433792).

650774940 is an abundant number, since it is smaller than the sum of its proper divisors (1250092644).

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

650774940 is a wasteful number, since it uses less digits than its factorization.

650774940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3747 (or 3745 counting only the distinct ones).

The product of its (nonzero) digits is 211680, while the sum is 42.

The square root of 650774940 is about 25510.2908646687. The cubic root of 650774940 is about 866.5832164883.

The spelling of 650774940 in words is "six hundred fifty million, seven hundred seventy-four thousand, nine hundred forty".