3678739 has 4 divisors (see below), whose sum is σ = 3797440. Its totient is φ = 3560040.

The previous prime is 3678713. The next prime is 3678743. The reversal of 3678739 is 9378763.

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

It is not a de Polignac number, because 3678739 - 2¹⁷ = 3547667 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3678695 and 3678704.

It is not an unprimeable number, because it can be changed into a prime (3678539) 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, 59304 + ... + 59365.

It is an arithmetic number, because the mean of its divisors is an integer number (949360).

Almost surely, 2^3678739 is an apocalyptic number.

3678739 is a deficient number, since it is larger than the sum of its proper divisors (118701).

3678739 is a wasteful number, since it uses less digits than its factorization.

3678739 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118700.

The product of its digits is 190512, while the sum is 43.

The square root of 3678739 is about 1918.0039103193. The cubic root of 3678739 is about 154.3712161213.

The spelling of 3678739 in words is "three million, six hundred seventy-eight thousand, seven hundred thirty-nine".