61066998 has 24 divisors (see below), whose sum is σ = 132577536. Its totient is φ = 20314800.

The previous prime is 61066991. The next prime is 61067021. The reversal of 61066998 is 89966016.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61066991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6603 + ... + 12873.

It is an arithmetic number, because the mean of its divisors is an integer number (5524064).

Almost surely, 2^61066998 is an apocalyptic number.

61066998 is an abundant number, since it is smaller than the sum of its proper divisors (71510538).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61066998 is a wasteful number, since it uses less digits than its factorization.

61066998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6820 (or 6817 counting only the distinct ones).

The product of its (nonzero) digits is 139968, while the sum is 45.

The square root of 61066998 is about 7814.5376062823. The cubic root of 61066998 is about 393.7937843979.

The spelling of 61066998 in words is "sixty-one million, sixty-six thousand, nine hundred ninety-eight".