61426369 has 2 divisors, whose sum is σ = 61426370. Its totient is φ = 61426368.

The previous prime is 61426367. The next prime is 61426381. The reversal of 61426369 is 96362416.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 35283600 + 26142769 = 5940^2 + 5113^2 .

It is a cyclic number.

It is not a de Polignac number, because 61426369 - 2¹ = 61426367 is a prime.

It is a super-2 number, since 2×61426369² = 7546397617048322, which contains 22 as substring.

Together with 61426367, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (61426363) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30713184 + 30713185.

It is an arithmetic number, because the mean of its divisors is an integer number (30713185).

Almost surely, 2^61426369 is an apocalyptic number.

It is an amenable number.

61426369 is a deficient number, since it is larger than the sum of its proper divisors (1).

61426369 is an equidigital number, since it uses as much as digits as its factorization.

61426369 is an evil number, because the sum of its binary digits is even.

The product of its digits is 46656, while the sum is 37.

The square root of 61426369 is about 7837.4976236041. The cubic root of 61426369 is about 394.5647483658.

The spelling of 61426369 in words is "sixty-one million, four hundred twenty-six thousand, three hundred sixty-nine".