1678065650 has 48 divisors (see below), whose sum is σ = 3230983680. Its totient is φ = 647740800.

The previous prime is 1678065637. The next prime is 1678065677. The reversal of 1678065650 is 565608761.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 632627 + ... + 635273.

It is an arithmetic number, because the mean of its divisors is an integer number (67312160).

Almost surely, 2^1678065650 is an apocalyptic number.

1678065650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1678065650 is a deficient number, since it is larger than the sum of its proper divisors (1552918030).

1678065650 is a wasteful number, since it uses less digits than its factorization.

1678065650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3099 (or 3094 counting only the distinct ones).

The product of its (nonzero) digits is 302400, while the sum is 44.

The square root of 1678065650 is about 40964.1996138091. The cubic root of 1678065650 is about 1188.3279603527.

The spelling of 1678065650 in words is "one billion, six hundred seventy-eight million, sixty-five thousand, six hundred fifty".