6215494 has 4 divisors (see below), whose sum is σ = 9323244. Its totient is φ = 3107746.

The previous prime is 6215491. The next prime is 6215501. The reversal of 6215494 is 4945126.

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

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6215491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1553872 + ... + 1553875.

It is an arithmetic number, because the mean of its divisors is an integer number (2330811).

Almost surely, 2^6215494 is an apocalyptic number.

6215494 is a deficient number, since it is larger than the sum of its proper divisors (3107750).

6215494 is a wasteful number, since it uses less digits than its factorization.

6215494 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3107749.

The product of its digits is 8640, while the sum is 31.

The square root of 6215494 is about 2493.0892483022. The cubic root of 6215494 is about 183.8619593193.

The spelling of 6215494 in words is "six million, two hundred fifteen thousand, four hundred ninety-four".