61366138 has 8 divisors (see below), whose sum is σ = 92161440. Its totient is φ = 30645660.

The previous prime is 61366099. The next prime is 61366147. The reversal of 61366138 is 83166316.

It is a happy number.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16608 + ... + 19963.

It is an arithmetic number, because the mean of its divisors is an integer number (11520180).

Almost surely, 2^61366138 is an apocalyptic number.

61366138 is a deficient number, since it is larger than the sum of its proper divisors (30795302).

61366138 is a wasteful number, since it uses less digits than its factorization.

61366138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37412.

The product of its digits is 15552, while the sum is 34.

The square root of 61366138 is about 7833.6541920103. The cubic root of 61366138 is about 394.4357440446.

It can be divided in two parts, 61366 and 138, that added together give a square (61504 = 248²).

The spelling of 61366138 in words is "sixty-one million, three hundred sixty-six thousand, one hundred thirty-eight".