61673497 has 2 divisors, whose sum is σ = 61673498. Its totient is φ = 61673496.

The previous prime is 61673453. The next prime is 61673531. The reversal of 61673497 is 79437616.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 61528336 + 145161 = 7844^2 + 381^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61673497 is a prime.

It is not a weakly prime, because it can be changed into another prime (61673407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30836748 + 30836749.

It is an arithmetic number, because the mean of its divisors is an integer number (30836749).

Almost surely, 2^61673497 is an apocalyptic number.

It is an amenable number.

61673497 is a deficient number, since it is larger than the sum of its proper divisors (1).

61673497 is an equidigital number, since it uses as much as digits as its factorization.

61673497 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 190512, while the sum is 43.

The square root of 61673497 is about 7853.2475448059. The cubic root of 61673497 is about 395.0931724875.

The spelling of 61673497 in words is "sixty-one million, six hundred seventy-three thousand, four hundred ninety-seven".