1564066746 has 160 divisors (see below), whose sum is σ = 4121542656. Its totient is φ = 438372000.

The previous prime is 1564066733. The next prime is 1564066747. The reversal of 1564066746 is 6476604651.

It is not an unprimeable number, because it can be changed into a prime (1564066747) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 1269951 + ... + 1271181.

Almost surely, 2^1564066746 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1564066746, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2060771328).

1564066746 is an abundant number, since it is smaller than the sum of its proper divisors (2557475910).

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

1564066746 is a wasteful number, since it uses less digits than its factorization.

1564066746 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1310 (or 1301 counting only the distinct ones).

The product of its (nonzero) digits is 725760, while the sum is 45.

The square root of 1564066746 is about 39548.2837301443. The cubic root of 1564066746 is about 1160.7849290134.

The spelling of 1564066746 in words is "one billion, five hundred sixty-four million, sixty-six thousand, seven hundred forty-six".