611375540 has 24 divisors (see below), whose sum is σ = 1351462560. Its totient is φ = 231679008.

The previous prime is 611375537. The next prime is 611375543. The reversal of 611375540 is 45573116.

It is an interprime number because it is at equal distance from previous prime (611375537) and next prime (611375543).

It is a junction number, because it is equal to n+sod(n) for n = 611375497 and 611375506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (611375543) 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, 804062 + ... + 804821.

It is an arithmetic number, because the mean of its divisors is an integer number (56310940).

Almost surely, 2^611375540 is an apocalyptic number.

It is an amenable number.

611375540 is an abundant number, since it is smaller than the sum of its proper divisors (740087020).

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

611375540 is a wasteful number, since it uses less digits than its factorization.

611375540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1608911 (or 1608909 counting only the distinct ones).

The product of its (nonzero) digits is 12600, while the sum is 32.

The square root of 611375540 is about 24726.0093828341. The cubic root of 611375540 is about 848.7296085904.

The spelling of 611375540 in words is "six hundred eleven million, three hundred seventy-five thousand, five hundred forty".