611376864 has 48 divisors (see below), whose sum is σ = 1834132608. Its totient is φ = 174678912.

The previous prime is 611376853. The next prime is 611376911. The reversal of 611376864 is 468673116.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a nude number because it is divisible by every one of its digits.

It is a zygodrome in base 13.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 454222 + ... + 455565.

It is an arithmetic number, because the mean of its divisors is an integer number (38211096).

Almost surely, 2^611376864 is an apocalyptic number.

It is an amenable number.

611376864 is an abundant number, since it is smaller than the sum of its proper divisors (1222755744).

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

611376864 is a wasteful number, since it uses less digits than its factorization.

611376864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 909807 (or 909799 counting only the distinct ones).

The product of its digits is 145152, while the sum is 42.

The square root of 611376864 is about 24726.0361562463. The cubic root of 611376864 is about 848.7302212620.

The spelling of 611376864 in words is "six hundred eleven million, three hundred seventy-six thousand, eight hundred sixty-four".