650785690 has 16 divisors (see below), whose sum is σ = 1222345728. Its totient is φ = 248996176.

The previous prime is 650785679. The next prime is 650785703. The reversal of 650785690 is 96587056.

650785690 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×650785690² = 847044028617552200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (46).

It is an alternating number because its digits alternate between even and odd.

It is a self number, because there is not a number n which added to its sum of digits gives 650785690.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1414522 + ... + 1414981.

It is an arithmetic number, because the mean of its divisors is an integer number (76396608).

Almost surely, 2^650785690 is an apocalyptic number.

650785690 is a deficient number, since it is larger than the sum of its proper divisors (571560038).

650785690 is a wasteful number, since it uses less digits than its factorization.

650785690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2829533.

The product of its (nonzero) digits is 453600, while the sum is 46.

The square root of 650785690 is about 25510.5015630818. The cubic root of 650785690 is about 866.5879880909.

The spelling of 650785690 in words is "six hundred fifty million, seven hundred eighty-five thousand, six hundred ninety".