61412985 has 20 divisors (see below), whose sum is σ = 110089188. Its totient is φ = 32753376.

The previous prime is 61412983. The next prime is 61412999. The reversal of 61412985 is 58921416.

It can be written as a sum of positive squares in 2 ways, for example, as 26873856 + 34539129 = 5184^2 + 5877^2 .

It is not a de Polignac number, because 61412985 - 2¹ = 61412983 is a prime.

It is a super-2 number, since 2×61412985² = 7543109453220450, which contains 22 as substring.

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

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (61412983) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 75414 + ... + 76223.

Almost surely, 2^61412985 is an apocalyptic number.

It is an amenable number.

61412985 is a deficient number, since it is larger than the sum of its proper divisors (48676203).

61412985 is a wasteful number, since it uses less digits than its factorization.

61412985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151654 (or 151645 counting only the distinct ones).

The product of its digits is 17280, while the sum is 36.

The square root of 61412985 is about 7836.6437331296. The cubic root of 61412985 is about 394.5360894567.

The spelling of 61412985 in words is "sixty-one million, four hundred twelve thousand, nine hundred eighty-five".