61230819 has 16 divisors (see below), whose sum is σ = 90299552. Its totient is φ = 36661248.

The previous prime is 61230817. The next prime is 61230823. The reversal of 61230819 is 91803216.

It is not a de Polignac number, because 61230819 - 2¹ = 61230817 is a prime.

It is a super-2 number, since 2×61230819² = 7498426390821522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61230817) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19774 + ... + 22659.

It is an arithmetic number, because the mean of its divisors is an integer number (5643722).

Almost surely, 2^61230819 is an apocalyptic number.

61230819 is a deficient number, since it is larger than the sum of its proper divisors (29068733).

61230819 is a wasteful number, since it uses less digits than its factorization.

61230819 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42486.

The product of its (nonzero) digits is 2592, while the sum is 30.

The square root of 61230819 is about 7825.0123961563. The cubic root of 61230819 is about 394.1456061248.

The spelling of 61230819 in words is "sixty-one million, two hundred thirty thousand, eight hundred nineteen".