1020640107 has 8 divisors (see below), whose sum is σ = 1362514320. Its totient is φ = 679596320.

The previous prime is 1020640099. The next prime is 1020640147. The reversal of 1020640107 is 7010460201.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1020640107 - 2³ = 1020640099 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1020640147) 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, 204732 + ... + 209657.

It is an arithmetic number, because the mean of its divisors is an integer number (170314290).

Almost surely, 2^1020640107 is an apocalyptic number.

1020640107 is a deficient number, since it is larger than the sum of its proper divisors (341874213).

1020640107 is an equidigital number, since it uses as much as digits as its factorization.

1020640107 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 415213.

The product of its (nonzero) digits is 336, while the sum is 21.

The square root of 1020640107 is about 31947.4585374173. The cubic root of 1020640107 is about 1006.8332361947.

The spelling of 1020640107 in words is "one billion, twenty million, six hundred forty thousand, one hundred seven".