611097840 has 60 divisors (see below), whose sum is σ = 2052272664. Its totient is φ = 162959232.

The previous prime is 611097829. The next prime is 611097841. The reversal of 611097840 is 48790116.

It is a tau number, because it is divible by the number of its divisors (60).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 611097795 and 611097804.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (611097841) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 423654 + ... + 425093.

Almost surely, 2^611097840 is an apocalyptic number.

611097840 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

611097840 is an abundant number, since it is smaller than the sum of its proper divisors (1441174824).

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

611097840 is a wasteful number, since it uses less digits than its factorization.

611097840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 848766 (or 848757 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 36.

The square root of 611097840 is about 24720.3932007563. The cubic root of 611097840 is about 848.6010853444.

It can be divided in two parts, 61 and 1097840, that added together give a palindrome (1097901).

The spelling of 611097840 in words is "six hundred eleven million, ninety-seven thousand, eight hundred forty".