347485997 has 2 divisors, whose sum is σ = 347485998. Its totient is φ = 347485996.

The previous prime is 347485979. The next prime is 347486023. The reversal of 347485997 is 799584743.

Together with previous prime (347485979) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 305935081 + 41550916 = 17491^2 + 6446^2 .

It is an emirp because it is prime and its reverse (799584743) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 347485997 - 2⁸ = 347485741 is a prime.

It is a super-2 number, since 2×347485997² = 241493036222168018, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (347485297) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 173742998 + 173742999.

It is an arithmetic number, because the mean of its divisors is an integer number (173742999).

Almost surely, 2^347485997 is an apocalyptic number.

It is an amenable number.

347485997 is a deficient number, since it is larger than the sum of its proper divisors (1).

347485997 is an equidigital number, since it uses as much as digits as its factorization.

347485997 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7620480, while the sum is 56.

The square root of 347485997 is about 18640.9762888106. The cubic root of 347485997 is about 703.0384903792.

The spelling of 347485997 in words is "three hundred forty-seven million, four hundred eighty-five thousand, nine hundred ninety-seven".