61424669 has 2 divisors, whose sum is σ = 61424670. Its totient is φ = 61424668.

The previous prime is 61424659. The next prime is 61424707. The reversal of 61424669 is 96642416.

It is a happy number.

It is an a-pointer prime, because the next prime (61424707) can be obtained adding 61424669 to its sum of digits (38).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 59059225 + 2365444 = 7685^2 + 1538^2 .

It is a cyclic number.

It is not a de Polignac number, because 61424669 - 2²⁰ = 60376093 is a prime.

It is a super-2 number, since 2×61424669² = 7545979923519122, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61424659) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30712334 + 30712335.

It is an arithmetic number, because the mean of its divisors is an integer number (30712335).

Almost surely, 2^61424669 is an apocalyptic number.

It is an amenable number.

61424669 is a deficient number, since it is larger than the sum of its proper divisors (1).

61424669 is an equidigital number, since it uses as much as digits as its factorization.

61424669 is an evil number, because the sum of its binary digits is even.

The product of its digits is 62208, while the sum is 38.

The square root of 61424669 is about 7837.3891698703. The cubic root of 61424669 is about 394.5611084184.

The spelling of 61424669 in words is "sixty-one million, four hundred twenty-four thousand, six hundred sixty-nine".