61079990 has 8 divisors (see below), whose sum is σ = 109944000. Its totient is φ = 24431992.

The previous prime is 61079989. The next prime is 61079999. The reversal of 61079990 is 9997016.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61079999) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3053990 + ... + 3054009.

It is an arithmetic number, because the mean of its divisors is an integer number (13743000).

Almost surely, 2^61079990 is an apocalyptic number.

61079990 is a deficient number, since it is larger than the sum of its proper divisors (48864010).

61079990 is a wasteful number, since it uses less digits than its factorization.

61079990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6108006.

The product of its (nonzero) digits is 30618, while the sum is 41.

The square root of 61079990 is about 7815.3688332669. The cubic root of 61079990 is about 393.8217089520.

The spelling of 61079990 in words is "sixty-one million, seventy-nine thousand, nine hundred ninety".