340685569 has 4 divisors (see below), whose sum is σ = 389354944. Its totient is φ = 292016196.

The previous prime is 340685557. The next prime is 340685573. The reversal of 340685569 is 965586043.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 965586043 = 17 ⋅56799179.

It is a cyclic number.

It is not a de Polignac number, because 340685569 - 2¹⁷ = 340554497 is a prime.

It is a super-2 number, since 2×340685569² = 232133313849707522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (340685519) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24334677 + ... + 24334690.

It is an arithmetic number, because the mean of its divisors is an integer number (97338736).

Almost surely, 2^340685569 is an apocalyptic number.

It is an amenable number.

340685569 is a deficient number, since it is larger than the sum of its proper divisors (48669375).

340685569 is an equidigital number, since it uses as much as digits as its factorization.

340685569 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48669374.

The product of its (nonzero) digits is 777600, while the sum is 46.

The square root of 340685569 is about 18457.6696524778. The cubic root of 340685569 is about 698.4220025646.

The spelling of 340685569 in words is "three hundred forty million, six hundred eighty-five thousand, five hundred sixty-nine".