6243645 has 8 divisors (see below), whose sum is σ = 9989856. Its totient is φ = 3329936.

The previous prime is 6243631. The next prime is 6243659. The reversal of 6243645 is 5463426.

It is an interprime number because it is at equal distance from previous prime (6243631) and next prime (6243659).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 6243645 - 2¹⁴ = 6227261 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 208107 + ... + 208136.

It is an arithmetic number, because the mean of its divisors is an integer number (1248732).

Almost surely, 2^6243645 is an apocalyptic number.

It is an amenable number.

6243645 is a deficient number, since it is larger than the sum of its proper divisors (3746211).

6243645 is a wasteful number, since it uses less digits than its factorization.

6243645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 416251.

The product of its digits is 17280, while the sum is 30.

The square root of 6243645 is about 2498.7286767474. The cubic root of 6243645 is about 184.1391217060.

It can be divided in two parts, 62436 and 45, that added together give a triangular number (62481 = T₃₅₃).

The spelling of 6243645 in words is "six million, two hundred forty-three thousand, six hundred forty-five".