6157645 has 16 divisors (see below), whose sum is σ = 8093232. Its totient is φ = 4469760.

The previous prime is 6157639. The next prime is 6157661. The reversal of 6157645 is 5467516.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 3161284 + 2996361 = 1778^2 + 1731^2 .

It is not a de Polignac number, because 6157645 - 2³ = 6157637 is a prime.

It is a super-3 number, since 3×6157645³ (a number of 21 digits) contains 333 as substring.

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 6157645.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3189 + ... + 4741.

It is an arithmetic number, because the mean of its divisors is an integer number (505827).

Almost surely, 2^6157645 is an apocalyptic number.

6157645 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

6157645 is a deficient number, since it is larger than the sum of its proper divisors (1935587).

6157645 is a wasteful number, since it uses less digits than its factorization.

6157645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1632.

The product of its digits is 25200, while the sum is 34.

The square root of 6157645 is about 2481.4602555753. The cubic root of 6157645 is about 183.2897655885.

The spelling of 6157645 in words is "six million, one hundred fifty-seven thousand, six hundred forty-five".