1006645604 has 6 divisors (see below), whose sum is σ = 1761629814. Its totient is φ = 503322800.

The previous prime is 1006645583. The next prime is 1006645681. The reversal of 1006645604 is 4065466001.

It can be written as a sum of positive squares in only one way, i.e., 1006158400 + 487204 = 31720^2 + 698^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 125830697 + ... + 125830704.

It is an arithmetic number, because the mean of its divisors is an integer number (293604969).

Almost surely, 2^1006645604 is an apocalyptic number.

It is an amenable number.

1006645604 is a deficient number, since it is larger than the sum of its proper divisors (754984210).

1006645604 is a wasteful number, since it uses less digits than its factorization.

1006645604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 251661405 (or 251661403 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 32.

The square root of 1006645604 is about 31727.6788309514. The cubic root of 1006645604 is about 1002.2103122536.

The spelling of 1006645604 in words is "one billion, six million, six hundred forty-five thousand, six hundred four".