1679561284 has 12 divisors (see below), whose sum is σ = 2962376704. Its totient is φ = 833167944.

The previous prime is 1679561237. The next prime is 1679561287. The reversal of 1679561284 is 4821659761.

It is a happy number.

It is a super-2 number, since 2×1679561284² = 5641852213423457312, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1679561287) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1652604 + ... + 1653619.

Almost surely, 2^1679561284 is an apocalyptic number.

It is an amenable number.

1679561284 is a deficient number, since it is larger than the sum of its proper divisors (1282815420).

1679561284 is a wasteful number, since it uses less digits than its factorization.

1679561284 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3306354 (or 3306352 counting only the distinct ones).

The product of its digits is 725760, while the sum is 49.

The square root of 1679561284 is about 40982.4509271957. The cubic root of 1679561284 is about 1188.6809016364.

The spelling of 1679561284 in words is "one billion, six hundred seventy-nine million, five hundred sixty-one thousand, two hundred eighty-four".