340538537 has 4 divisors (see below), whose sum is σ = 341768196. Its totient is φ = 339308880.

The previous prime is 340538519. The next prime is 340538567. The reversal of 340538537 is 735835043.

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

It can be written as a sum of positive squares in 2 ways, for example, as 148328041 + 192210496 = 12179^2 + 13864^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-340538537 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 340538537.

It is not an unprimeable number, because it can be changed into a prime (340538567) 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, 614414 + ... + 614967.

It is an arithmetic number, because the mean of its divisors is an integer number (85442049).

Almost surely, 2^340538537 is an apocalyptic number.

It is an amenable number.

340538537 is a deficient number, since it is larger than the sum of its proper divisors (1229659).

340538537 is a wasteful number, since it uses less digits than its factorization.

340538537 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1229658.

The product of its (nonzero) digits is 151200, while the sum is 38.

The square root of 340538537 is about 18453.6862713118. The cubic root of 340538537 is about 698.3215138543.

The spelling of 340538537 in words is "three hundred forty million, five hundred thirty-eight thousand, five hundred thirty-seven".