6457988 has 12 divisors (see below), whose sum is σ = 11542272. Its totient is φ = 3160200.

The previous prime is 6457987. The next prime is 6457991. The reversal of 6457988 is 8897546.

It is a Harshad number since it is a multiple of its sum of digits (47).

It is not an unprimeable number, because it can be changed into a prime (6457987) 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, 16988 + ... + 17363.

It is an arithmetic number, because the mean of its divisors is an integer number (961856).

Almost surely, 2^6457988 is an apocalyptic number.

It is an amenable number.

6457988 is a deficient number, since it is larger than the sum of its proper divisors (5084284).

6457988 is a wasteful number, since it uses less digits than its factorization.

6457988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34402 (or 34400 counting only the distinct ones).

The product of its digits is 483840, while the sum is 47.

The square root of 6457988 is about 2541.2571691980. The cubic root of 6457988 is about 186.2226108697. Note that the first 3 decimals are identical.

The spelling of 6457988 in words is "six million, four hundred fifty-seven thousand, nine hundred eighty-eight".