61790871 has 8 divisors (see below), whose sum is σ = 84304000. Its totient is φ = 40235832.

The previous prime is 61790867. The next prime is 61790887. The reversal of 61790871 is 17809716.

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

It is not a de Polignac number, because 61790871 - 2² = 61790867 is a prime.

It is a super-2 number, since 2×61790871² = 7636223477877282, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61794871) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 239371 + ... + 239628.

It is an arithmetic number, because the mean of its divisors is an integer number (10538000).

Almost surely, 2^61790871 is an apocalyptic number.

61790871 is a deficient number, since it is larger than the sum of its proper divisors (22513129).

61790871 is a wasteful number, since it uses less digits than its factorization.

61790871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 479045.

The product of its (nonzero) digits is 21168, while the sum is 39.

The square root of 61790871 is about 7860.7169520343. The cubic root of 61790871 is about 395.3436543565.

The spelling of 61790871 in words is "sixty-one million, seven hundred ninety thousand, eight hundred seventy-one".