1520678066 has 16 divisors (see below), whose sum is σ = 2296021464. Its totient is φ = 755349504.

The previous prime is 1520678063. The next prime is 1520678083. The reversal of 1520678066 is 6608760251.

It can be written as a sum of positive squares in 4 ways, for example, as 1274847025 + 245831041 = 35705^2 + 15679^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1520678063) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 302066 + ... + 307058.

Almost surely, 2^1520678066 is an apocalyptic number.

1520678066 is a deficient number, since it is larger than the sum of its proper divisors (775343398).

1520678066 is a wasteful number, since it uses less digits than its factorization.

1520678066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5965.

The product of its (nonzero) digits is 120960, while the sum is 41.

The square root of 1520678066 is about 38995.8724226039. The cubic root of 1520678066 is about 1149.9503610584.

The spelling of 1520678066 in words is "one billion, five hundred twenty million, six hundred seventy-eight thousand, sixty-six".