61066197 has 16 divisors (see below), whose sum is σ = 90646080. Its totient is φ = 40630896.

The previous prime is 61066189. The next prime is 61066211. The reversal of 61066197 is 79166016.

It is not a de Polignac number, because 61066197 - 2³ = 61066189 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61066297) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13923 + ... + 17775.

It is an arithmetic number, because the mean of its divisors is an integer number (5665380).

Almost surely, 2^61066197 is an apocalyptic number.

It is an amenable number.

61066197 is a deficient number, since it is larger than the sum of its proper divisors (29579883).

61066197 is a wasteful number, since it uses less digits than its factorization.

61066197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4449 (or 4443 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 36.

The square root of 61066197 is about 7814.4863554811. The cubic root of 61066197 is about 393.7920626267.

The spelling of 61066197 in words is "sixty-one million, sixty-six thousand, one hundred ninety-seven".