6406258 has 4 divisors (see below), whose sum is σ = 9609390. Its totient is φ = 3203128.

The previous prime is 6406247. The next prime is 6406307. The reversal of 6406258 is 8526046.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 6066369 + 339889 = 2463^2 + 583^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1601563 + ... + 1601566.

Almost surely, 2^6406258 is an apocalyptic number.

6406258 is a deficient number, since it is larger than the sum of its proper divisors (3203132).

6406258 is a wasteful number, since it uses less digits than its factorization.

6406258 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3203131.

The product of its (nonzero) digits is 11520, while the sum is 31.

The square root of 6406258 is about 2531.0586717814. The cubic root of 6406258 is about 185.7240483456.

The spelling of 6406258 in words is "six million, four hundred six thousand, two hundred fifty-eight".