61000997 has 2 divisors, whose sum is σ = 61000998. Its totient is φ = 61000996.

The previous prime is 61000967. The next prime is 61001033. The reversal of 61000997 is 79900016.

61000997 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 49126081 + 11874916 = 7009^2 + 3446^2 .

It is a cyclic number.

It is not a de Polignac number, because 61000997 - 2²² = 56806693 is a prime.

It is a super-2 number, since 2×61000997² = 7442243269988018, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61000967) by changing a digit.

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 as a sum of consecutive naturals, namely, 30500498 + 30500499.

It is an arithmetic number, because the mean of its divisors is an integer number (30500499).

Almost surely, 2^61000997 is an apocalyptic number.

It is an amenable number.

61000997 is a deficient number, since it is larger than the sum of its proper divisors (1).

61000997 is an equidigital number, since it uses as much as digits as its factorization.

61000997 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3402, while the sum is 32.

The square root of 61000997 is about 7810.3135020305. The cubic root of 61000997 is about 393.6518629366.

The spelling of 61000997 in words is "sixty-one million, nine hundred ninety-seven", and thus it is an aban number.