61313869 has 2 divisors, whose sum is σ = 61313870. Its totient is φ = 61313868.

The previous prime is 61313867. The next prime is 61313899. The reversal of 61313869 is 96831316.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 58293225 + 3020644 = 7635^2 + 1738^2 .

It is a cyclic number.

It is not a de Polignac number, because 61313869 - 2¹ = 61313867 is a prime.

It is a super-2 number, since 2×61313869² = 7518781063498322, which contains 22 as substring.

Together with 61313867, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61313867) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30656934 + 30656935.

It is an arithmetic number, because the mean of its divisors is an integer number (30656935).

Almost surely, 2^61313869 is an apocalyptic number.

It is an amenable number.

61313869 is a deficient number, since it is larger than the sum of its proper divisors (1).

61313869 is an equidigital number, since it uses as much as digits as its factorization.

61313869 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 23328, while the sum is 37.

The square root of 61313869 is about 7830.3172988072. The cubic root of 61313869 is about 394.3237245127.

It can be divided in two parts, 6131 and 3869, that added together give a 4-th power (10000 = 10⁴).

The spelling of 61313869 in words is "sixty-one million, three hundred thirteen thousand, eight hundred sixty-nine".