662020745 has 4 divisors (see below), whose sum is σ = 794424900. Its totient is φ = 529616592.

The previous prime is 662020691. The next prime is 662020747. The reversal of 662020745 is 547020266.

662020745 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 174979984 + 487040761 = 13228^2 + 22069^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-662020745 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (662020747) 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, 66202070 + ... + 66202079.

It is an arithmetic number, because the mean of its divisors is an integer number (198606225).

Almost surely, 2^662020745 is an apocalyptic number.

It is an amenable number.

662020745 is a deficient number, since it is larger than the sum of its proper divisors (132404155).

662020745 is a wasteful number, since it uses less digits than its factorization.

662020745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132404154.

The product of its (nonzero) digits is 20160, while the sum is 32.

The square root of 662020745 is about 25729.7637960398. The cubic root of 662020745 is about 871.5464392275.

The spelling of 662020745 in words is "six hundred sixty-two million, twenty thousand, seven hundred forty-five".