61830506 has 4 divisors (see below), whose sum is σ = 92745762. Its totient is φ = 30915252.

The previous prime is 61830499. The next prime is 61830539. The reversal of 61830506 is 60503816.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 48177481 + 13653025 = 6941^2 + 3695^2 .

It is a super-2 number, since 2×61830506² = 7646022944432072, which contains 22 as substring.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 15457625 + ... + 15457628.

Almost surely, 2^61830506 is an apocalyptic number.

61830506 is a deficient number, since it is larger than the sum of its proper divisors (30915256).

61830506 is a wasteful number, since it uses less digits than its factorization.

61830506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30915255.

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 61830506 is about 7863.2376283564. The cubic root of 61830506 is about 395.4281657433.

The spelling of 61830506 in words is "sixty-one million, eight hundred thirty thousand, five hundred six".