61386969 has 16 divisors (see below), whose sum is σ = 93661568. Its totient is φ = 35033472.

The previous prime is 61386943. The next prime is 61386971. The reversal of 61386969 is 96968316.

61386969 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 61386969 - 2⁵ = 61386937 is a prime.

It is a super-2 number, since 2×61386969² = 7536719926013922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (61386769) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22149 + ... + 24765.

It is an arithmetic number, because the mean of its divisors is an integer number (5853848).

Almost surely, 2^61386969 is an apocalyptic number.

It is an amenable number.

61386969 is a deficient number, since it is larger than the sum of its proper divisors (32274599).

61386969 is a wasteful number, since it uses less digits than its factorization.

61386969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3744.

The product of its digits is 419904, while the sum is 48.

The square root of 61386969 is about 7834.9836630334. The cubic root of 61386969 is about 394.4803699665.

The spelling of 61386969 in words is "sixty-one million, three hundred eighty-six thousand, nine hundred sixty-nine".