61634138 has 16 divisors (see below), whose sum is σ = 100458240. Its totient is φ = 28252800.

The previous prime is 61634051. The next prime is 61634143. The reversal of 61634138 is 83143616.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24983 + ... + 27338.

It is an arithmetic number, because the mean of its divisors is an integer number (6278640).

Almost surely, 2^61634138 is an apocalyptic number.

61634138 is a deficient number, since it is larger than the sum of its proper divisors (38824102).

61634138 is a wasteful number, since it uses less digits than its factorization.

61634138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52373.

The product of its digits is 10368, while the sum is 32.

The square root of 61634138 is about 7850.7412388895. The cubic root of 61634138 is about 395.0091073048.

It can be divided in two parts, 6163 and 4138, that added together give a palindrome (10301).

The spelling of 61634138 in words is "sixty-one million, six hundred thirty-four thousand, one hundred thirty-eight".