619742466 has 48 divisors (see below), whose sum is σ = 1539929664. Its totient is φ = 176454432.

The previous prime is 619742447. The next prime is 619742467. The reversal of 619742466 is 664247916.

619742466 is a `hidden beast` number, since 61 + 97 + 42 + 466 = 666.

It is a super-2 number, since 2×619742466² = 768161448327522312, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (619742467) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 28525 + ... + 45311.

It is an arithmetic number, because the mean of its divisors is an integer number (32081868).

Almost surely, 2^619742466 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 619742466, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (769964832).

619742466 is an abundant number, since it is smaller than the sum of its proper divisors (920187198).

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

619742466 is a wasteful number, since it uses less digits than its factorization.

619742466 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17095 (or 17092 counting only the distinct ones).

The product of its digits is 435456, while the sum is 45.

The square root of 619742466 is about 24894.6272516782. The cubic root of 619742466 is about 852.5838176060.

The spelling of 619742466 in words is "six hundred nineteen million, seven hundred forty-two thousand, four hundred sixty-six".