343507680 has 72 divisors (see below), whose sum is σ = 1172224872. Its totient is φ = 91601664.

The previous prime is 343507673. The next prime is 343507733. The reversal of 343507680 is 86705343.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (72).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 117834 + ... + 120713.

It is an arithmetic number, because the mean of its divisors is an integer number (16280901).

Almost surely, 2^343507680 is an apocalyptic number.

343507680 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

343507680 is an abundant number, since it is smaller than the sum of its proper divisors (828717192).

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

343507680 is a wasteful number, since it uses less digits than its factorization.

343507680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 238568 (or 238557 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 36.

The square root of 343507680 is about 18533.9601812457. The cubic root of 343507680 is about 700.3451902929.

The spelling of 343507680 in words is "three hundred forty-three million, five hundred seven thousand, six hundred eighty".