619542068 has 24 divisors (see below), whose sum is σ = 1128013824. Its totient is φ = 297410400.

The previous prime is 619542061. The next prime is 619542071. The reversal of 619542068 is 860245916.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (619542061) 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, 3923 + ... + 35418.

It is an arithmetic number, because the mean of its divisors is an integer number (47000576).

Almost surely, 2^619542068 is an apocalyptic number.

It is an amenable number.

619542068 is a deficient number, since it is larger than the sum of its proper divisors (508471756).

619542068 is a wasteful number, since it uses less digits than its factorization.

619542068 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39503 (or 39501 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 41.

The square root of 619542068 is about 24890.6020015587. The cubic root of 619542068 is about 852.4919114135.

The spelling of 619542068 in words is "six hundred nineteen million, five hundred forty-two thousand, sixty-eight".