649694310 has 64 divisors (see below), whose sum is σ = 1619557632. Its totient is φ = 166674816.

The previous prime is 649694293. The next prime is 649694351. The reversal of 649694310 is 13496946.

649694310 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 2×649694310² = 844205392892752200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 82672 + ... + 90188.

It is an arithmetic number, because the mean of its divisors is an integer number (25305588).

Almost surely, 2^649694310 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 649694310, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (809778816).

649694310 is an abundant number, since it is smaller than the sum of its proper divisors (969863322).

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

649694310 is a wasteful number, since it uses less digits than its factorization.

649694310 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7637.

The product of its (nonzero) digits is 139968, while the sum is 42.

The square root of 649694310 is about 25489.1017888038. The cubic root of 649694310 is about 866.1032888516.

The spelling of 649694310 in words is "six hundred forty-nine million, six hundred ninety-four thousand, three hundred ten".