619479040 has 128 divisors (see below), whose sum is σ = 1572840000. Its totient is φ = 233570304.

The previous prime is 619479037. The next prime is 619479041. The reversal of 619479040 is 40974916.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (128).

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 619478984 and 619479002.

It is not an unprimeable number, because it can be changed into a prime (619479041) 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, 3112861 + ... + 3113059.

Almost surely, 2^619479040 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 619479040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (786420000).

619479040 is an abundant number, since it is smaller than the sum of its proper divisors (953360960).

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

619479040 is an equidigital number, since it uses as much as digits as its factorization.

619479040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 253 (or 225 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 40.

The square root of 619479040 is about 24889.3358690022. The cubic root of 619479040 is about 852.4630015218.

The spelling of 619479040 in words is "six hundred nineteen million, four hundred seventy-nine thousand, forty".