686046514 has 4 divisors (see below), whose sum is σ = 1029069774. Its totient is φ = 343023256.

The previous prime is 686046463. The next prime is 686046539. The reversal of 686046514 is 415640686.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 415640686 = 2 ⋅207820343.

It can be written as a sum of positive squares in only one way, i.e., 685549489 + 497025 = 26183^2 + 705^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 171511627 + ... + 171511630.

Almost surely, 2^686046514 is an apocalyptic number.

686046514 is a deficient number, since it is larger than the sum of its proper divisors (343023260).

686046514 is a wasteful number, since it uses less digits than its factorization.

686046514 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 343023259.

The product of its (nonzero) digits is 138240, while the sum is 40.

The square root of 686046514 is about 26192.4896487524. The cubic root of 686046514 is about 881.9646677983.

The spelling of 686046514 in words is "six hundred eighty-six million, forty-six thousand, five hundred fourteen".