61696761 has 16 divisors (see below), whose sum is σ = 94617984. Its totient is φ = 35028864.

The previous prime is 61696751. The next prime is 61696763. The reversal of 61696761 is 16769616.

It is not a de Polignac number, because 61696761 - 2⁵ = 61696729 is a prime.

It is a super-2 number, since 2×61696761² = 7612980635782242, which contains 22 as substring.

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

It is not an unprimeable number, because it can be changed into a prime (61696763) 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 15 ways as a sum of consecutive naturals, for example, 6060 + ... + 12653.

It is an arithmetic number, because the mean of its divisors is an integer number (5913624).

Almost surely, 2^61696761 is an apocalyptic number.

It is an amenable number.

61696761 is a deficient number, since it is larger than the sum of its proper divisors (32921223).

61696761 is a wasteful number, since it uses less digits than its factorization.

61696761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18880.

The product of its digits is 81648, while the sum is 42.

The square root of 61696761 is about 7854.7285758325. The cubic root of 61696761 is about 395.1428442403.

The spelling of 61696761 in words is "sixty-one million, six hundred ninety-six thousand, seven hundred sixty-one".