61030819 has 8 divisors (see below), whose sum is σ = 64026720. Its totient is φ = 58094400.

The previous prime is 61030811. The next prime is 61030841. The reversal of 61030819 is 91803016.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 61030819 - 2³ = 61030811 is a prime.

It is a super-2 number, since 2×61030819² = 7449521735621522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61030811) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12762 + ... + 16879.

It is an arithmetic number, because the mean of its divisors is an integer number (8003340).

Almost surely, 2^61030819 is an apocalyptic number.

61030819 is a deficient number, since it is larger than the sum of its proper divisors (2995901).

61030819 is a wasteful number, since it uses less digits than its factorization.

61030819 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29741.

The product of its (nonzero) digits is 1296, while the sum is 28.

The square root of 61030819 is about 7812.2224110684. Note that the first 3 decimals coincide. The cubic root of 61030819 is about 393.7160016332.

The spelling of 61030819 in words is "sixty-one million, thirty thousand, eight hundred nineteen".