611089920 has 400 divisors, whose sum is σ = 2507348448. Its totient is φ = 139345920.

The previous prime is 611089879. The next prime is 611089933. The reversal of 611089920 is 29980116.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 1451310 + ... + 1451730.

Almost surely, 2^611089920 is an apocalyptic number.

611089920 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 611089920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1253674224).

611089920 is an abundant number, since it is smaller than the sum of its proper divisors (1896258528).

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

611089920 is an equidigital number, since it uses as much as digits as its factorization.

611089920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 463 (or 438 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 36.

The square root of 611089920 is about 24720.2330086106. The cubic root of 611089920 is about 848.5974192923.

The spelling of 611089920 in words is "six hundred eleven million, eighty-nine thousand, nine hundred twenty".