6453940 has 24 divisors (see below), whose sum is σ = 13601952. Its totient is φ = 2572320.

The previous prime is 6453929. The next prime is 6453943. The reversal of 6453940 is 493546.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6453943) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8995 + ... + 9685.

It is an arithmetic number, because the mean of its divisors is an integer number (566748).

Almost surely, 2^6453940 is an apocalyptic number.

It is an amenable number.

6453940 is an abundant number, since it is smaller than the sum of its proper divisors (7148012).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6453940 is a wasteful number, since it uses less digits than its factorization.

6453940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1167 (or 1165 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 31.

The square root of 6453940 is about 2540.4605881611. The cubic root of 6453940 is about 186.1836933467.

The spelling of 6453940 in words is "six million, four hundred fifty-three thousand, nine hundred forty".