340785647 has 4 divisors (see below), whose sum is σ = 340863600. Its totient is φ = 340707696.

The previous prime is 340785637. The next prime is 340785649. The reversal of 340785647 is 746587043.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 340785647 - 2¹⁴ = 340769263 is a prime.

It is a super-2 number, since 2×340785647² = 232269714402417218, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 340785598 and 340785607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (340785649) 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, 32003 + ... + 41300.

It is an arithmetic number, because the mean of its divisors is an integer number (85215900).

Almost surely, 2^340785647 is an apocalyptic number.

340785647 is a deficient number, since it is larger than the sum of its proper divisors (77953).

340785647 is an equidigital number, since it uses as much as digits as its factorization.

340785647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77952.

The product of its (nonzero) digits is 564480, while the sum is 44.

The square root of 340785647 is about 18460.3804673685. The cubic root of 340785647 is about 698.4903841266.

The spelling of 340785647 in words is "three hundred forty million, seven hundred eighty-five thousand, six hundred forty-seven".