61491695 has 16 divisors (see below), whose sum is σ = 78486240. Its totient is φ = 46116864.

The previous prime is 61491679. The next prime is 61491697. The reversal of 61491695 is 59619416.

It is a cyclic number.

It is not a de Polignac number, because 61491695 - 2⁴ = 61491679 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61491697) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5879 + ... + 12551.

It is an arithmetic number, because the mean of its divisors is an integer number (4905390).

Almost surely, 2^61491695 is an apocalyptic number.

61491695 is a deficient number, since it is larger than the sum of its proper divisors (16994545).

61491695 is a wasteful number, since it uses less digits than its factorization.

61491695 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6794.

The product of its digits is 58320, while the sum is 41.

The square root of 61491695 is about 7841.6640453414. The cubic root of 61491695 is about 394.7045699948.

The spelling of 61491695 in words is "sixty-one million, four hundred ninety-one thousand, six hundred ninety-five".