340740654 has 16 divisors (see below), whose sum is σ = 703464960. Its totient is φ = 109916280.

The previous prime is 340740611. The next prime is 340740679. The reversal of 340740654 is 456047043.

It is a happy number.

It is a super-2 number, since 2×340740654² = 232208386576695432, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 915784 + ... + 916155.

It is an arithmetic number, because the mean of its divisors is an integer number (43966560).

Almost surely, 2^340740654 is an apocalyptic number.

340740654 is an abundant number, since it is smaller than the sum of its proper divisors (362724306).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

340740654 is a wasteful number, since it uses less digits than its factorization.

340740654 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1831975.

The product of its (nonzero) digits is 40320, while the sum is 33.

The square root of 340740654 is about 18459.1617902872. The cubic root of 340740654 is about 698.4596428466.

Adding to 340740654 its reverse (456047043), we get a palindrome (796787697).

The spelling of 340740654 in words is "three hundred forty million, seven hundred forty thousand, six hundred fifty-four".