346679987 has 2 divisors, whose sum is σ = 346679988. Its totient is φ = 346679986.

The previous prime is 346679959. The next prime is 346679999. The reversal of 346679987 is 789976643.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 346679987 - 2⁶ = 346679923 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (346679587) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 173339993 + 173339994.

It is an arithmetic number, because the mean of its divisors is an integer number (173339994).

Almost surely, 2^346679987 is an apocalyptic number.

346679987 is a deficient number, since it is larger than the sum of its proper divisors (1).

346679987 is an equidigital number, since it uses as much as digits as its factorization.

346679987 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13716864, while the sum is 59.

The square root of 346679987 is about 18619.3444299202. The cubic root of 346679987 is about 702.4944926811.

The spelling of 346679987 in words is "three hundred forty-six million, six hundred seventy-nine thousand, nine hundred eighty-seven".