61616090 has 8 divisors (see below), whose sum is σ = 110908980. Its totient is φ = 24646432.

The previous prime is 61616089. The next prime is 61616101. The reversal of 61616090 is 9061616.

It can be written as a sum of positive squares in 2 ways, for example, as 59892121 + 1723969 = 7739^2 + 1313^2 .

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, 3080795 + ... + 3080814.

Almost surely, 2^61616090 is an apocalyptic number.

61616090 is a deficient number, since it is larger than the sum of its proper divisors (49292890).

61616090 is a wasteful number, since it uses less digits than its factorization.

61616090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6161616.

The product of its (nonzero) digits is 1944, while the sum is 29.

The square root of 61616090 is about 7849.5917091273. The cubic root of 61616090 is about 394.9705473954.

The spelling of 61616090 in words is "sixty-one million, six hundred sixteen thousand, ninety".