61066198 has 4 divisors (see below), whose sum is σ = 91599300. Its totient is φ = 30533098.

The previous prime is 61066189. The next prime is 61066211. The reversal of 61066198 is 89166016.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15266548 + ... + 15266551.

It is an arithmetic number, because the mean of its divisors is an integer number (22899825).

Almost surely, 2^61066198 is an apocalyptic number.

61066198 is a deficient number, since it is larger than the sum of its proper divisors (30533102).

61066198 is a wasteful number, since it uses less digits than its factorization.

61066198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30533101.

The product of its (nonzero) digits is 15552, while the sum is 37.

The square root of 61066198 is about 7814.4864194648. The cubic root of 61066198 is about 393.7920647762.

The spelling of 61066198 in words is "sixty-one million, sixty-six thousand, one hundred ninety-eight".