415036861 has 8 divisors (see below), whose sum is σ = 441994104. Its totient is φ = 388362240.

The previous prime is 415036859. The next prime is 415036873. The reversal of 415036861 is 168630514.

415036861 = 14405² + 14406².

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 88548100 + 326488761 = 9410^2 + 18069^2 .

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

It is a 6-Lehmer number, since φ(415036861) divides (415036861-1)⁶.

It is a cyclic number.

It is not a de Polignac number, because 415036861 - 2¹ = 415036859 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (415036261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 67620 + ... + 73501.

It is an arithmetic number, because the mean of its divisors is an integer number (55249263).

Almost surely, 2^415036861 is an apocalyptic number.

415036861 is the 14406-th centered square number.

It is an amenable number.

415036861 is a deficient number, since it is larger than the sum of its proper divisors (26957243).

415036861 is a wasteful number, since it uses less digits than its factorization.

415036861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141311.

The product of its (nonzero) digits is 17280, while the sum is 34.

The square root of 415036861 is about 20372.4534850371. The cubic root of 415036861 is about 745.9256760738.

The spelling of 415036861 in words is "four hundred fifteen million, thirty-six thousand, eight hundred sixty-one".