61673693 has 2 divisors, whose sum is σ = 61673694. Its totient is φ = 61673692.

The previous prime is 61673683. The next prime is 61673699. The reversal of 61673693 is 39637616.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 60637369 + 1036324 = 7787^2 + 1018^2 .

It is a cyclic number.

It is not a de Polignac number, because 61673693 - 2⁶ = 61673629 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 61673693.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61673699) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30836846 + 30836847.

It is an arithmetic number, because the mean of its divisors is an integer number (30836847).

Almost surely, 2^61673693 is an apocalyptic number.

It is an amenable number.

61673693 is a deficient number, since it is larger than the sum of its proper divisors (1).

61673693 is an equidigital number, since it uses as much as digits as its factorization.

61673693 is an evil number, because the sum of its binary digits is even.

The product of its digits is 122472, while the sum is 41.

The square root of 61673693 is about 7853.2600237099. The cubic root of 61673693 is about 395.0935910259.

The spelling of 61673693 in words is "sixty-one million, six hundred seventy-three thousand, six hundred ninety-three".