340946653 has 4 divisors (see below), whose sum is σ = 345054528. Its totient is φ = 336838780.

The previous prime is 340946647. The next prime is 340946657. The reversal of 340946653 is 356649043.

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: 356649043 = 16603 ⋅21481.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-340946653 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (340946657) 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, 2053813 + ... + 2053978.

It is an arithmetic number, because the mean of its divisors is an integer number (86263632).

Almost surely, 2^340946653 is an apocalyptic number.

It is an amenable number.

340946653 is a deficient number, since it is larger than the sum of its proper divisors (4107875).

340946653 is an equidigital number, since it uses as much as digits as its factorization.

340946653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4107874.

The product of its (nonzero) digits is 233280, while the sum is 40.

The square root of 340946653 is about 18464.7408051129. The cubic root of 340946653 is about 698.6003686457.

The spelling of 340946653 in words is "three hundred forty million, nine hundred forty-six thousand, six hundred fifty-three".