346641664 has 18 divisors (see below), whose sum is σ = 691929770. Its totient is φ = 173320704.

The previous prime is 346641661. The next prime is 346641689. The reversal of 346641664 is 466146643.

It can be written as a sum of positive squares in only one way, i.e., 224760064 + 121881600 = 14992^2 + 11040^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (346641661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 676779 + ... + 677290.

Almost surely, 2^346641664 is an apocalyptic number.

It is an amenable number.

346641664 is a deficient number, since it is larger than the sum of its proper divisors (345288106).

346641664 is an equidigital number, since it uses as much as digits as its factorization.

346641664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1354085 (or 1354071 counting only the distinct ones).

The product of its digits is 248832, while the sum is 40.

The square root of 346641664 is about 18618.3152836125. The cubic root of 346641664 is about 702.4686064752.

The spelling of 346641664 in words is "three hundred forty-six million, six hundred forty-one thousand, six hundred sixty-four".