1000608778 has 12 divisors (see below), whose sum is σ = 1625249718. Its totient is φ = 461819280.

The previous prime is 1000608757. The next prime is 1000608781. The reversal of 1000608778 is 8778060001.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 324972729 + 675636049 = 18027^2 + 25993^2 .

It is a super-2 number, since 2×1000608778² = 2002435853221306568, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1479853 + ... + 1480528.

Almost surely, 2^1000608778 is an apocalyptic number.

1000608778 is a deficient number, since it is larger than the sum of its proper divisors (624640940).

1000608778 is a wasteful number, since it uses less digits than its factorization.

1000608778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2960409 (or 2960396 counting only the distinct ones).

The product of its (nonzero) digits is 18816, while the sum is 37.

The square root of 1000608778 is about 31632.4007625093. The cubic root of 1000608778 is about 1000.2028848350.

Adding to 1000608778 its reverse (8778060001), we get a palindrome (9778668779).

The spelling of 1000608778 in words is "one billion, six hundred eight thousand, seven hundred seventy-eight".