650698620 has 192 divisors, whose sum is σ = 2157442560. Its totient is φ = 144460800.

The previous prime is 650698571. The next prime is 650698621. The reversal of 650698620 is 26896056.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (650698621) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1552771 + ... + 1553189.

It is an arithmetic number, because the mean of its divisors is an integer number (11236680).

Almost surely, 2^650698620 is an apocalyptic number.

650698620 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 650698620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1078721280).

650698620 is an abundant number, since it is smaller than the sum of its proper divisors (1506743940).

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

650698620 is a wasteful number, since it uses less digits than its factorization.

650698620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 636 (or 634 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 42.

The square root of 650698620 is about 25508.7949538978. The cubic root of 650698620 is about 866.5493388179.

The spelling of 650698620 in words is "six hundred fifty million, six hundred ninety-eight thousand, six hundred twenty".