6157640 has 16 divisors (see below), whose sum is σ = 13854780. Its totient is φ = 2463040.

The previous prime is 6157639. The next prime is 6157661. The reversal of 6157640 is 467516.

It can be written as a sum of positive squares in 2 ways, for example, as 5982916 + 174724 = 2446^2 + 418^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 76931 + ... + 77010.

Almost surely, 2^6157640 is an apocalyptic number.

It is an amenable number.

6157640 is an abundant number, since it is smaller than the sum of its proper divisors (7697140).

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

6157640 is a wasteful number, since it uses less digits than its factorization.

6157640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153952 (or 153948 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 29.

The square root of 6157640 is about 2481.4592481038. The cubic root of 6157640 is about 183.2897159781.

It can be divided in two parts, 61576 and 40, that added together give a palindrome (61616).

The spelling of 6157640 in words is "six million, one hundred fifty-seven thousand, six hundred forty".