650978910 has 32 divisors (see below), whose sum is σ = 1735944480. Its totient is φ = 173594304.

The previous prime is 650978899. The next prime is 650978917. The reversal of 650978910 is 19879056.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (650978917) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1205247 + ... + 1205786.

It is an arithmetic number, because the mean of its divisors is an integer number (54248265).

Almost surely, 2^650978910 is an apocalyptic number.

650978910 is an abundant number, since it is smaller than the sum of its proper divisors (1084965570).

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

650978910 is a wasteful number, since it uses less digits than its factorization.

650978910 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2411049 (or 2411043 counting only the distinct ones).

The product of its (nonzero) digits is 136080, while the sum is 45.

The square root of 650978910 is about 25514.2883498639. The cubic root of 650978910 is about 866.6737436963.

The spelling of 650978910 in words is "six hundred fifty million, nine hundred seventy-eight thousand, nine hundred ten".