349660087 has 8 divisors (see below), whose sum is σ = 399759872. Its totient is φ = 299597400.

The previous prime is 349660061. The next prime is 349660093. The reversal of 349660087 is 780066943.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-349660087 is a prime.

It is a super-3 number, since 3×349660087³ (a number of 27 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (349660037) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15262 + ... + 30532.

It is an arithmetic number, because the mean of its divisors is an integer number (49969984).

Almost surely, 2^349660087 is an apocalyptic number.

349660087 is a deficient number, since it is larger than the sum of its proper divisors (50099785).

349660087 is a wasteful number, since it uses less digits than its factorization.

349660087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18549.

The product of its (nonzero) digits is 217728, while the sum is 43.

The square root of 349660087 is about 18699.2001700608. The cubic root of 349660087 is about 704.5016594589.

The spelling of 349660087 in words is "three hundred forty-nine million, six hundred sixty thousand, eighty-seven".