3073639 has 4 divisors (see below), whose sum is σ = 3105424. Its totient is φ = 3041856.

The previous prime is 3073633. The next prime is 3073657. The reversal of 3073639 is 9363703.

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: 9363703 = 41 ⋅228383.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3073639 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 3073639.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3073633) 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, 15747 + ... + 15940.

It is an arithmetic number, because the mean of its divisors is an integer number (776356).

Almost surely, 2^3073639 is an apocalyptic number.

3073639 is a deficient number, since it is larger than the sum of its proper divisors (31785).

3073639 is an equidigital number, since it uses as much as digits as its factorization.

3073639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31784.

The product of its (nonzero) digits is 10206, while the sum is 31.

The square root of 3073639 is about 1753.1796827479. The cubic root of 3073639 is about 145.3954957872.

Subtracting 3073639 from its reverse (9363703), we obtain a square (6290064 = 2508²).

The spelling of 3073639 in words is "three million, seventy-three thousand, six hundred thirty-nine".