61896569 has 8 divisors (see below), whose sum is σ = 70790208. Its totient is φ = 53015760.

The previous prime is 61896557. The next prime is 61896577. The reversal of 61896569 is 96569816.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 61896569 - 2⁸ = 61896313 is a prime.

It is a super-2 number, since 2×61896569² = 7662370507943522, which contains 22 as substring.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a plaindrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (61896529) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11879 + ... + 16275.

It is an arithmetic number, because the mean of its divisors is an integer number (8848776).

Almost surely, 2^61896569 is an apocalyptic number.

It is an amenable number.

61896569 is a deficient number, since it is larger than the sum of its proper divisors (8893639).

61896569 is a wasteful number, since it uses less digits than its factorization.

61896569 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6415.

The product of its digits is 699840, while the sum is 50.

The square root of 61896569 is about 7867.4372574556. The cubic root of 61896569 is about 395.5689477743.

The spelling of 61896569 in words is "sixty-one million, eight hundred ninety-six thousand, five hundred sixty-nine".