347420661 has 16 divisors (see below), whose sum is σ = 537306624. Its totient is φ = 195562224.

The previous prime is 347420659. The next prime is 347420669. The reversal of 347420661 is 166024743.

It is a happy number.

It is not a de Polignac number, because 347420661 - 2¹ = 347420659 is a prime.

It is a super-2 number, since 2×347420661² = 241402231379353842, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (347420669) 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, 122055 + ... + 124868.

It is an arithmetic number, because the mean of its divisors is an integer number (33581664).

Almost surely, 2^347420661 is an apocalyptic number.

It is an amenable number.

347420661 is a deficient number, since it is larger than the sum of its proper divisors (189885963).

347420661 is a wasteful number, since it uses less digits than its factorization.

347420661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 247000.

The product of its (nonzero) digits is 24192, while the sum is 33.

The square root of 347420661 is about 18639.2237231061. The cubic root of 347420661 is about 702.9944247167.

The spelling of 347420661 in words is "three hundred forty-seven million, four hundred twenty thousand, six hundred sixty-one".