61876009 has 8 divisors (see below), whose sum is σ = 67324040. Its totient is φ = 56526336.

The previous prime is 61876007. The next prime is 61876013. The reversal of 61876009 is 90067816.

It can be written as a sum of positive squares in 4 ways, for example, as 1968409 + 59907600 = 1403^2 + 7740^2 .

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 61876009 - 2¹ = 61876007 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61876007) 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, 23274 + ... + 25795.

It is an arithmetic number, because the mean of its divisors is an integer number (8415505).

Almost surely, 2^61876009 is an apocalyptic number.

It is an amenable number.

61876009 is a deficient number, since it is larger than the sum of its proper divisors (5448031).

61876009 is a wasteful number, since it uses less digits than its factorization.

61876009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49179.

The product of its (nonzero) digits is 18144, while the sum is 37.

The square root of 61876009 is about 7866.1304972648. The cubic root of 61876009 is about 395.5251446021.

The spelling of 61876009 in words is "sixty-one million, eight hundred seventy-six thousand, nine".