6478157 has 8 divisors (see below), whose sum is σ = 7725696. Its totient is φ = 5311152.

The previous prime is 6478117. The next prime is 6478187. The reversal of 6478157 is 7518746.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 6478157 - 2¹⁴ = 6461773 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6478157.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6478117) 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, 19958 + ... + 20279.

It is an arithmetic number, because the mean of its divisors is an integer number (965712).

Almost surely, 2^6478157 is an apocalyptic number.

It is an amenable number.

6478157 is a deficient number, since it is larger than the sum of its proper divisors (1247539).

6478157 is a wasteful number, since it uses less digits than its factorization.

6478157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40267.

The product of its digits is 47040, while the sum is 38.

The square root of 6478157 is about 2545.2223871403. Note that the first 3 decimals coincide. The cubic root of 6478157 is about 186.4162738989.

The spelling of 6478157 in words is "six million, four hundred seventy-eight thousand, one hundred fifty-seven".