661262002 has 16 divisors (see below), whose sum is σ = 1053831960. Its totient is φ = 310601088.

The previous prime is 661261999. The next prime is 661262027. The reversal of 661262002 is 200262166.

661262002 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 488365801 + 172896201 = 22099^2 + 13149^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 151923 + ... + 156214.

Almost surely, 2^661262002 is an apocalyptic number.

661262002 is a deficient number, since it is larger than the sum of its proper divisors (392569958).

661262002 is a wasteful number, since it uses less digits than its factorization.

661262002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 308205.

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 661262002 is about 25715.0151079092. The cubic root of 661262002 is about 871.2133517036.

The spelling of 661262002 in words is "six hundred sixty-one million, two hundred sixty-two thousand, two".