340737997 has 2 divisors, whose sum is σ = 340737998. Its totient is φ = 340737996.

The previous prime is 340737989. The next prime is 340738037. The reversal of 340737997 is 799737043.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 301161316 + 39576681 = 17354^2 + 6291^2 .

It is a cyclic number.

It is not a de Polignac number, because 340737997 - 2³ = 340737989 is a prime.

It is a super-2 number, since 2×340737997² = 232204765199144018, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 340737997.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (340737967) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 170368998 + 170368999.

It is an arithmetic number, because the mean of its divisors is an integer number (170368999).

Almost surely, 2^340737997 is an apocalyptic number.

It is an amenable number.

340737997 is a deficient number, since it is larger than the sum of its proper divisors (1).

340737997 is an equidigital number, since it uses as much as digits as its factorization.

340737997 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1000188, while the sum is 49.

The square root of 340737997 is about 18459.0898204651. The cubic root of 340737997 is about 698.4578273778.

The spelling of 340737997 in words is "three hundred forty million, seven hundred thirty-seven thousand, nine hundred ninety-seven".