61966998 has 32 divisors (see below), whose sum is σ = 137985120. Its totient is φ = 20613600.

The previous prime is 61966981. The next prime is 61967011. The reversal of 61966998 is 89966916.

61966998 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×61966998² = 7679817682264008, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37036 + ... + 38672.

It is an arithmetic number, because the mean of its divisors is an integer number (4312035).

Almost surely, 2^61966998 is an apocalyptic number.

61966998 is an abundant number, since it is smaller than the sum of its proper divisors (76018122).

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

61966998 is a wasteful number, since it uses less digits than its factorization.

61966998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2349 (or 2343 counting only the distinct ones).

The product of its digits is 1259712, while the sum is 54.

The square root of 61966998 is about 7871.9119659712. The cubic root of 61966998 is about 395.7189235910.

The spelling of 61966998 in words is "sixty-one million, nine hundred sixty-six thousand, nine hundred ninety-eight".