611871240 has 32 divisors (see below), whose sum is σ = 1835614080. Its totient is φ = 163165632.

The previous prime is 611871229. The next prime is 611871287. The reversal of 611871240 is 42178116.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 611871198 and 611871207.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2549344 + ... + 2549583.

It is an arithmetic number, because the mean of its divisors is an integer number (57362940).

Almost surely, 2^611871240 is an apocalyptic number.

611871240 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

611871240 is an abundant number, since it is smaller than the sum of its proper divisors (1223742840).

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

611871240 is a wasteful number, since it uses less digits than its factorization.

611871240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5098941 (or 5098937 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 30.

The square root of 611871240 is about 24736.0312095534. The cubic root of 611871240 is about 848.9589284253.

The spelling of 611871240 in words is "six hundred eleven million, eight hundred seventy-one thousand, two hundred forty".