346909661 has 12 divisors (see below), whose sum is σ = 407125692. Its totient is φ = 294715008.

The previous prime is 346909639. The next prime is 346909699. The reversal of 346909661 is 166909643.

It can be written as a sum of positive squares in 2 ways, for example, as 38204761 + 308704900 = 6181^2 + 17570^2 .

It is not a de Polignac number, because 346909661 - 2⁶ = 346909597 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (346909631) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 25790 + ... + 36863.

It is an arithmetic number, because the mean of its divisors is an integer number (33927141).

Almost surely, 2^346909661 is an apocalyptic number.

It is an amenable number.

346909661 is a deficient number, since it is larger than the sum of its proper divisors (60216031).

346909661 is a wasteful number, since it uses less digits than its factorization.

346909661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62780 (or 62773 counting only the distinct ones).

The product of its (nonzero) digits is 209952, while the sum is 44.

The square root of 346909661 is about 18625.5110265464. The cubic root of 346909661 is about 702.6495916284.

The spelling of 346909661 in words is "three hundred forty-six million, nine hundred nine thousand, six hundred sixty-one".