61140490 has 8 divisors (see below), whose sum is σ = 110052900. Its totient is φ = 24456192.

The previous prime is 61140473. The next prime is 61140523. The reversal of 61140490 is 9404116.

61140490 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 60668521 + 471969 = 7789^2 + 687^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3057015 + ... + 3057034.

Almost surely, 2^61140490 is an apocalyptic number.

61140490 is a deficient number, since it is larger than the sum of its proper divisors (48912410).

61140490 is a wasteful number, since it uses less digits than its factorization.

61140490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6114056.

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 61140490 is about 7819.2384539672. The cubic root of 61140490 is about 393.9516934257.

The spelling of 61140490 in words is "sixty-one million, one hundred forty thousand, four hundred ninety".