61407197 has 2 divisors, whose sum is σ = 61407198. Its totient is φ = 61407196.

The previous prime is 61407191. The next prime is 61407223. The reversal of 61407197 is 79170416.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 44009956 + 17397241 = 6634^2 + 4171^2 .

It is a cyclic number.

It is not a de Polignac number, because 61407197 - 2⁶ = 61407133 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61407191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30703598 + 30703599.

It is an arithmetic number, because the mean of its divisors is an integer number (30703599).

Almost surely, 2^61407197 is an apocalyptic number.

It is an amenable number.

61407197 is a deficient number, since it is larger than the sum of its proper divisors (1).

61407197 is an equidigital number, since it uses as much as digits as its factorization.

61407197 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10584, while the sum is 35.

The square root of 61407197 is about 7836.2744336834. The cubic root of 61407197 is about 394.5236944307.

The spelling of 61407197 in words is "sixty-one million, four hundred seven thousand, one hundred ninety-seven".