61469669 has 4 divisors (see below), whose sum is σ = 61494444. Its totient is φ = 61444896.

The previous prime is 61469659. The next prime is 61469677. The reversal of 61469669 is 96696416.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 37332100 + 24137569 = 6110^2 + 4913^2 .

It is a cyclic number.

It is not a de Polignac number, because 61469669 - 2⁸ = 61469413 is a prime.

It is a super-2 number, since 2×61469669² = 7557040413939122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61469659) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8192 + ... + 13785.

It is an arithmetic number, because the mean of its divisors is an integer number (15373611).

Almost surely, 2^61469669 is an apocalyptic number.

It is an amenable number.

61469669 is a deficient number, since it is larger than the sum of its proper divisors (24775).

61469669 is a wasteful number, since it uses less digits than its factorization.

61469669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24774.

The product of its digits is 419904, while the sum is 47.

The square root of 61469669 is about 7840.2594982564. The cubic root of 61469669 is about 394.6574373368.

The spelling of 61469669 in words is "sixty-one million, four hundred sixty-nine thousand, six hundred sixty-nine".