61572838 has 8 divisors (see below), whose sum is σ = 92399832. Its totient is φ = 30772896.

The previous prime is 61572779. The next prime is 61572839. The reversal of 61572838 is 83827516.

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

It is a self number, because there is not a number n which added to its sum of digits gives 61572838.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61572839) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 481 + ... + 11107.

It is an arithmetic number, because the mean of its divisors is an integer number (11549979).

Almost surely, 2^61572838 is an apocalyptic number.

61572838 is a deficient number, since it is larger than the sum of its proper divisors (30826994).

61572838 is a wasteful number, since it uses less digits than its factorization.

61572838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13526.

The product of its digits is 80640, while the sum is 40.

The square root of 61572838 is about 7846.8361777216. The cubic root of 61572838 is about 394.8781079859.

The spelling of 61572838 in words is "sixty-one million, five hundred seventy-two thousand, eight hundred thirty-eight".