61696090 has 8 divisors (see below), whose sum is σ = 111052980. Its totient is φ = 24678432.

The previous prime is 61696049. The next prime is 61696127. The reversal of 61696090 is 9069616.

It can be written as a sum of positive squares in 2 ways, for example, as 59613841 + 2082249 = 7721^2 + 1443^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3084795 + ... + 3084814.

Almost surely, 2^61696090 is an apocalyptic number.

61696090 is a deficient number, since it is larger than the sum of its proper divisors (49356890).

61696090 is a wasteful number, since it uses less digits than its factorization.

61696090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6169616.

The product of its (nonzero) digits is 17496, while the sum is 37.

The square root of 61696090 is about 7854.6858625918. The cubic root of 61696090 is about 395.1414117404.

The spelling of 61696090 in words is "sixty-one million, six hundred ninety-six thousand, ninety".