61673201 has 2 divisors, whose sum is σ = 61673202. Its totient is φ = 61673200.

The previous prime is 61673179. The next prime is 61673203. The reversal of 61673201 is 10237616.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 48720400 + 12952801 = 6980^2 + 3599^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61673201 is a prime.

Together with 61673203, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (61673203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30836600 + 30836601.

It is an arithmetic number, because the mean of its divisors is an integer number (30836601).

Almost surely, 2^61673201 is an apocalyptic number.

It is an amenable number.

61673201 is a deficient number, since it is larger than the sum of its proper divisors (1).

61673201 is an equidigital number, since it uses as much as digits as its factorization.

61673201 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1512, while the sum is 26.

The square root of 61673201 is about 7853.2286990766. The cubic root of 61673201 is about 395.0925404074.

The spelling of 61673201 in words is "sixty-one million, six hundred seventy-three thousand, two hundred one".