61519693 has 2 divisors, whose sum is σ = 61519694. Its totient is φ = 61519692.

The previous prime is 61519691. The next prime is 61519723. The reversal of 61519693 is 39691516.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 61418569 + 101124 = 7837^2 + 318^2 .

It is a cyclic number.

It is not a de Polignac number, because 61519693 - 2¹ = 61519691 is a prime.

Together with 61519691, it forms a pair of twin primes.

It is equal to p_3646858 and since 61519693 and 3646858 have the same sum of digits, it is a Honaker prime.

It is a zygodrome in base 5.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61519691) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30759846 + 30759847.

It is an arithmetic number, because the mean of its divisors is an integer number (30759847).

Almost surely, 2^61519693 is an apocalyptic number.

It is an amenable number.

61519693 is a deficient number, since it is larger than the sum of its proper divisors (1).

61519693 is an equidigital number, since it uses as much as digits as its factorization.

61519693 is an evil number, because the sum of its binary digits is even.

The product of its digits is 43740, while the sum is 40.

The square root of 61519693 is about 7843.4490500034. The cubic root of 61519693 is about 394.7644656807.

The spelling of 61519693 in words is "sixty-one million, five hundred nineteen thousand, six hundred ninety-three".