340775649 has 12 divisors (see below), whose sum is σ = 494012116. Its totient is φ = 226361952.

The previous prime is 340775639. The next prime is 340775651. The reversal of 340775649 is 946577043.

It can be written as a sum of positive squares in 2 ways, for example, as 114062400 + 226713249 = 10680^2 + 15057^2 .

It is not a de Polignac number, because 340775649 - 2⁹ = 340775137 is a prime.

It is a super-2 number, since 2×340775649² = 232256085902742402, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (340775609) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 65854 + ... + 70839.

Almost surely, 2^340775649 is an apocalyptic number.

It is an amenable number.

340775649 is a deficient number, since it is larger than the sum of its proper divisors (153236467).

340775649 is a wasteful number, since it uses less digits than its factorization.

340775649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136976 (or 136973 counting only the distinct ones).

The product of its (nonzero) digits is 635040, while the sum is 45.

The square root of 340775649 is about 18460.1096692300. The cubic root of 340775649 is about 698.4835532686.

The spelling of 340775649 in words is "three hundred forty million, seven hundred seventy-five thousand, six hundred forty-nine".