340620511 has 24 divisors (see below), whose sum is σ = 439620480. Its totient is φ = 260895600.

The previous prime is 340620509. The next prime is 340620521. The reversal of 340620511 is 115026043.

It is not a de Polignac number, because 340620511 - 2¹ = 340620509 is a prime.

It is a super-2 number, since 2×340620511² = 232044665027802242, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (340620521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 26446 + ... + 37156.

It is an arithmetic number, because the mean of its divisors is an integer number (18317520).

Almost surely, 2^340620511 is an apocalyptic number.

340620511 is a deficient number, since it is larger than the sum of its proper divisors (98999969).

340620511 is a wasteful number, since it uses less digits than its factorization.

340620511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10795 (or 10788 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 340620511 is about 18455.9072115136. The cubic root of 340620511 is about 698.3775423786.

Adding to 340620511 its reverse (115026043), we get a palindrome (455646554).

The spelling of 340620511 in words is "three hundred forty million, six hundred twenty thousand, five hundred eleven".