346640456 has 8 divisors (see below), whose sum is σ = 649950870. Its totient is φ = 173320224.

The previous prime is 346640449. The next prime is 346640467. The reversal of 346640456 is 654046643.

It is a happy number.

346640456 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 212868100 + 133772356 = 14590^2 + 11566^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21665021 + ... + 21665036.

Almost surely, 2^346640456 is an apocalyptic number.

It is an amenable number.

346640456 is a deficient number, since it is larger than the sum of its proper divisors (303310414).

346640456 is a wasteful number, since it uses less digits than its factorization.

346640456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43330063 (or 43330059 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 38.

The square root of 346640456 is about 18618.2828424106. The cubic root of 346640456 is about 702.4677904711.

The spelling of 346640456 in words is "three hundred forty-six million, six hundred forty thousand, four hundred fifty-six".