340585457 has 2 divisors, whose sum is σ = 340585458. Its totient is φ = 340585456.

The previous prime is 340585423. The next prime is 340585471. The reversal of 340585457 is 754585043.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 335585761 + 4999696 = 18319^2 + 2236^2 .

It is a cyclic number.

It is not a de Polignac number, because 340585457 - 2²⁰ = 339536881 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (340585477) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 170292728 + 170292729.

It is an arithmetic number, because the mean of its divisors is an integer number (170292729).

Almost surely, 2^340585457 is an apocalyptic number.

It is an amenable number.

340585457 is a deficient number, since it is larger than the sum of its proper divisors (1).

340585457 is an equidigital number, since it uses as much as digits as its factorization.

340585457 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 336000, while the sum is 41.

The square root of 340585457 is about 18454.9575182388. The cubic root of 340585457 is about 698.3535843712.

The spelling of 340585457 in words is "three hundred forty million, five hundred eighty-five thousand, four hundred fifty-seven".