650695680 has 264 divisors, whose sum is σ = 2342619552. Its totient is φ = 173187072.

The previous prime is 650695613. The next prime is 650695699. The reversal of 650695680 is 86596056.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1243899 + ... + 1244421.

Almost surely, 2^650695680 is an apocalyptic number.

650695680 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 650695680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1171309776).

650695680 is an abundant number, since it is smaller than the sum of its proper divisors (1691923872).

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

650695680 is an equidigital number, since it uses as much as digits as its factorization.

650695680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 563 (or 533 counting only the distinct ones).

The product of its (nonzero) digits is 388800, while the sum is 45.

The square root of 650695680 is about 25508.7373266495. The cubic root of 650695680 is about 866.5480337289.

The spelling of 650695680 in words is "six hundred fifty million, six hundred ninety-five thousand, six hundred eighty".