346256661 has 16 divisors (see below), whose sum is σ = 477195264. Its totient is φ = 223196784.

The previous prime is 346256657. The next prime is 346256681. The reversal of 346256661 is 166652643.

It is not a de Polignac number, because 346256661 - 2² = 346256657 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (346256611) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3091 + ... + 26496.

It is an arithmetic number, because the mean of its divisors is an integer number (29824704).

Almost surely, 2^346256661 is an apocalyptic number.

It is an amenable number.

346256661 is a deficient number, since it is larger than the sum of its proper divisors (130938603).

346256661 is a wasteful number, since it uses less digits than its factorization.

346256661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29720.

The product of its digits is 155520, while the sum is 39.

The square root of 346256661 is about 18607.9730492066. The cubic root of 346256661 is about 702.2084408746.

The spelling of 346256661 in words is "three hundred forty-six million, two hundred fifty-six thousand, six hundred sixty-one".