61000872 has 16 divisors (see below), whose sum is σ = 152502240. Its totient is φ = 20333616.

The previous prime is 61000859. The next prime is 61000897. The reversal of 61000872 is 27800016.

It is a super-2 number, since 2×61000872² = 7442212769520768, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24), and also a Moran number because the ratio is a prime number: 2541703 = 61000872 / (6 + 1 + 0 + 0 + 0 + 8 + 7 + 2).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1270828 + ... + 1270875.

It is an arithmetic number, because the mean of its divisors is an integer number (9531390).

Almost surely, 2^61000872 is an apocalyptic number.

It is an amenable number.

61000872 is an abundant number, since it is smaller than the sum of its proper divisors (91501368).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61000872 is a wasteful number, since it uses less digits than its factorization.

61000872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2541712 (or 2541708 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 24.

The square root of 61000872 is about 7810.3054997868. The cubic root of 61000872 is about 393.6515940529.

Adding to 61000872 its reverse (27800016), we get a palindrome (88800888).

The spelling of 61000872 in words is "sixty-one million, eight hundred seventy-two", and thus it is an aban number.