619534064 has 40 divisors (see below), whose sum is σ = 1280877840. Its totient is φ = 289433088.

The previous prime is 619534063. The next prime is 619534079. The reversal of 619534064 is 460435916.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (619534061) 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, 8234 + ... + 36150.

It is an arithmetic number, because the mean of its divisors is an integer number (32021946).

Almost surely, 2^619534064 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 619534064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (640438920).

619534064 is an abundant number, since it is smaller than the sum of its proper divisors (661343776).

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

619534064 is a wasteful number, since it uses less digits than its factorization.

619534064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28017 (or 28011 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 38.

The square root of 619534064 is about 24890.4412174634. The cubic root of 619534064 is about 852.4882402210.

The spelling of 619534064 in words is "six hundred nineteen million, five hundred thirty-four thousand, sixty-four".