61994966 has 32 divisors (see below), whose sum is σ = 104049792. Its totient is φ = 27466560.

The previous prime is 61994963. The next prime is 61994969. The reversal of 61994966 is 66949916.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (61994963) and next prime (61994969).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61994963) 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, 201785 + ... + 202091.

It is an arithmetic number, because the mean of its divisors is an integer number (3251556).

Almost surely, 2^61994966 is an apocalyptic number.

61994966 is a deficient number, since it is larger than the sum of its proper divisors (42054826).

61994966 is a wasteful number, since it uses less digits than its factorization.

61994966 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 524.

The product of its digits is 629856, while the sum is 50.

The square root of 61994966 is about 7873.6882082033. The cubic root of 61994966 is about 395.7784488360.

The spelling of 61994966 in words is "sixty-one million, nine hundred ninety-four thousand, nine hundred sixty-six".