61831966 has 16 divisors (see below), whose sum is σ = 111576960. Its totient is φ = 25104600.

The previous prime is 61831963. The next prime is 61831999. The reversal of 61831966 is 66913816.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61831963) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 115960 + ... + 116491.

It is an arithmetic number, because the mean of its divisors is an integer number (6973560).

Almost surely, 2^61831966 is an apocalyptic number.

61831966 is a deficient number, since it is larger than the sum of its proper divisors (49744994).

61831966 is a wasteful number, since it uses less digits than its factorization.

61831966 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 232479.

The product of its digits is 46656, while the sum is 40.

The square root of 61831966 is about 7863.3304648857. The cubic root of 61831966 is about 395.4312781260.

The spelling of 61831966 in words is "sixty-one million, eight hundred thirty-one thousand, nine hundred sixty-six".