345650640 has 40 divisors (see below), whose sum is σ = 1071517728. Its totient is φ = 92173440.

The previous prime is 345650629. The next prime is 345650671. The reversal of 345650640 is 46056543.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 719866 + ... + 720345.

Almost surely, 2^345650640 is an apocalyptic number.

345650640 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

345650640 is an abundant number, since it is smaller than the sum of its proper divisors (725867088).

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

345650640 is a wasteful number, since it uses less digits than its factorization.

345650640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1440227 (or 1440221 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 33.

The square root of 345650640 is about 18591.6820110500. The cubic root of 345650640 is about 701.7985314828.

The spelling of 345650640 in words is "three hundred forty-five million, six hundred fifty thousand, six hundred forty".