61819401 has 8 divisors (see below), whose sum is σ = 94201024. Its totient is φ = 35325360.

The previous prime is 61819399. The next prime is 61819403. The reversal of 61819401 is 10491816.

61819401 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (61819399) and next prime (61819403).

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

It is not a de Polignac number, because 61819401 - 2¹ = 61819399 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61819403) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 1471870 + ... + 1471911.

It is an arithmetic number, because the mean of its divisors is an integer number (11775128).

Almost surely, 2^61819401 is an apocalyptic number.

It is an amenable number.

61819401 is a deficient number, since it is larger than the sum of its proper divisors (32381623).

61819401 is a wasteful number, since it uses less digits than its factorization.

61819401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2943791.

The product of its (nonzero) digits is 1728, while the sum is 30.

The square root of 61819401 is about 7862.5314625762. The cubic root of 61819401 is about 395.4044908457.

The spelling of 61819401 in words is "sixty-one million, eight hundred nineteen thousand, four hundred one".