61494185 has 16 divisors (see below), whose sum is σ = 80249616. Its totient is φ = 45047808.

The previous prime is 61494143. The next prime is 61494221. The reversal of 61494185 is 58149416.

It can be written as a sum of positive squares in 8 ways, for example, as 13897984 + 47596201 = 3728^2 + 6899^2 .

It is a cyclic number.

It is not a de Polignac number, because 61494185 - 2¹² = 61490089 is a prime.

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

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6632 + ... + 12921.

It is an arithmetic number, because the mean of its divisors is an integer number (5015601).

Almost surely, 2^61494185 is an apocalyptic number.

It is an amenable number.

61494185 is a deficient number, since it is larger than the sum of its proper divisors (18755431).

61494185 is a wasteful number, since it uses less digits than its factorization.

61494185 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19612.

The product of its digits is 34560, while the sum is 38.

The square root of 61494185 is about 7841.8228110561. The cubic root of 61494185 is about 394.7098975495.

The spelling of 61494185 in words is "sixty-one million, four hundred ninety-four thousand, one hundred eighty-five".