6450739 has 4 divisors (see below), whose sum is σ = 6455824. Its totient is φ = 6445656.

The previous prime is 6450737. The next prime is 6450749. The reversal of 6450739 is 9370546.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 6450739 - 2¹ = 6450737 is a prime.

It is a super-2 number, since 2×6450739² = 83224067292242, which contains 22 as substring.

It is a Duffinian number.

6450739 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (6450733) 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, 1114 + ... + 3760.

It is an arithmetic number, because the mean of its divisors is an integer number (1613956).

Almost surely, 2^6450739 is an apocalyptic number.

6450739 is a deficient number, since it is larger than the sum of its proper divisors (5085).

6450739 is a wasteful number, since it uses less digits than its factorization.

6450739 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5084.

The product of its (nonzero) digits is 22680, while the sum is 34.

The square root of 6450739 is about 2539.8305061559. The cubic root of 6450739 is about 186.1529073690.

It can be divided in two parts, 64507 and 39, that added together give a palindrome (64546).

The spelling of 6450739 in words is "six million, four hundred fifty thousand, seven hundred thirty-nine".