61167838 has 4 divisors (see below), whose sum is σ = 91751760. Its totient is φ = 30583918.

The previous prime is 61167809. The next prime is 61167839. The reversal of 61167838 is 83876116.

It is a semiprime because it is the product of two primes.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 61167838.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61167839) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15291958 + ... + 15291961.

It is an arithmetic number, because the mean of its divisors is an integer number (22937940).

Almost surely, 2^61167838 is an apocalyptic number.

61167838 is a deficient number, since it is larger than the sum of its proper divisors (30583922).

61167838 is a wasteful number, since it uses less digits than its factorization.

61167838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30583921.

The product of its digits is 48384, while the sum is 40.

The square root of 61167838 is about 7820.9870221092. The cubic root of 61167838 is about 394.0104225644.

The spelling of 61167838 in words is "sixty-one million, one hundred sixty-seven thousand, eight hundred thirty-eight".