345988 has 12 divisors (see below), whose sum is σ = 614992. Its totient is φ = 170280.

The previous prime is 345979. The next prime is 345997. The reversal of 345988 is 889543.

It is an interprime number because it is at equal distance from previous prime (345979) and next prime (345997).

It is a super-2 number, since 2×345988² = 239415392288, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 378 + ... + 913.

2³⁴⁵⁹⁸⁸ is an apocalyptic number.

It is an amenable number.

345988 is a deficient number, since it is larger than the sum of its proper divisors (269004).

345988 is a wasteful number, since it uses less digits than its factorization.

345988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1362 (or 1360 counting only the distinct ones).

The product of its digits is 34560, while the sum is 37.

The square root of 345988 is about 588.2074463997. The cubic root of 345988 is about 70.2026779064.

The spelling of 345988 in words is "three hundred forty-five thousand, nine hundred eighty-eight".