61830457 has 8 divisors (see below), whose sum is σ = 66837960. Its totient is φ = 56858880.

The previous prime is 61830451. The next prime is 61830467. The reversal of 61830457 is 75403816.

It can be written as a sum of positive squares in 4 ways, for example, as 2062096 + 59768361 = 1436^2 + 7731^2 .

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

It is not a de Polignac number, because 61830457 - 2¹¹ = 61828409 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61830451) 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 7 ways as a sum of consecutive naturals, for example, 5344 + ... + 12337.

It is an arithmetic number, because the mean of its divisors is an integer number (8354745).

Almost surely, 2^61830457 is an apocalyptic number.

It is an amenable number.

61830457 is a deficient number, since it is larger than the sum of its proper divisors (5007503).

61830457 is a wasteful number, since it uses less digits than its factorization.

61830457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17963.

The product of its (nonzero) digits is 20160, while the sum is 34.

The square root of 61830457 is about 7863.2345125909. The cubic root of 61830457 is about 395.4280612858.

The spelling of 61830457 in words is "sixty-one million, eight hundred thirty thousand, four hundred fifty-seven".