340756057 has 2 divisors, whose sum is σ = 340756058. Its totient is φ = 340756056.

The previous prime is 340756001. The next prime is 340756067. The reversal of 340756057 is 750657043.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 210134016 + 130622041 = 14496^2 + 11429^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-340756057 is a prime.

It is a super-2 number, since 2×340756057² = 232229380764374498, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (340756067) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 170378028 + 170378029.

It is an arithmetic number, because the mean of its divisors is an integer number (170378029).

Almost surely, 2^340756057 is an apocalyptic number.

It is an amenable number.

340756057 is a deficient number, since it is larger than the sum of its proper divisors (1).

340756057 is an equidigital number, since it uses as much as digits as its factorization.

340756057 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 88200, while the sum is 37.

The square root of 340756057 is about 18459.5790038668. The cubic root of 340756057 is about 698.4701671869.

The spelling of 340756057 in words is "three hundred forty million, seven hundred fifty-six thousand, fifty-seven".