34687391 has 4 divisors (see below), whose sum is σ = 34806072. Its totient is φ = 34568712.

The previous prime is 34687379. The next prime is 34687417. The reversal of 34687391 is 19378643.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 19378643 = 277 ⋅69959.

It is a cyclic number.

It is not a de Polignac number, because 34687391 - 2¹⁸ = 34425247 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (34687321) 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, 58901 + ... + 59486.

It is an arithmetic number, because the mean of its divisors is an integer number (8701518).

Almost surely, 2^34687391 is an apocalyptic number.

34687391 is a deficient number, since it is larger than the sum of its proper divisors (118681).

34687391 is a wasteful number, since it uses less digits than its factorization.

34687391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118680.

The product of its digits is 108864, while the sum is 41.

The square root of 34687391 is about 5889.6002411030. The cubic root of 34687391 is about 326.1298459005.

The spelling of 34687391 in words is "thirty-four million, six hundred eighty-seven thousand, three hundred ninety-one".