690406160727042 has 20 divisors (see below), whose sum is σ = 1547021211999846. Its totient is φ = 230135386908960.

The previous prime is 690406160727011. The next prime is 690406160727091. The reversal of 690406160727042 is 240727061604096.

690406160727042 is a `hidden beast` number, since 6 + 9 + 0 + 4 + 0 + 6 + 1 + 607 + 27 + 0 + 4 + 2 = 666.

It can be written as a sum of positive squares in only one way, i.e., 356665547419281 + 333740613307761 = 18885591^2 + 18268569^2 .

It is a hoax number, since the sum of its digits (54) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a self number, because there is not a number n which added to its sum of digits gives 690406160727042.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 2130883211959 + ... + 2130883212282.

Almost surely, 2^{690406160727042} is an apocalyptic number.

690406160727042 is an abundant number, since it is smaller than the sum of its proper divisors (856615051272804).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

690406160727042 is a wasteful number, since it uses less digits than its factorization.

690406160727042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4261766424255 (or 4261766424246 counting only the distinct ones).

The product of its (nonzero) digits is 6096384, while the sum is 54.

The spelling of 690406160727042 in words is "six hundred ninety trillion, four hundred six billion, one hundred sixty million, seven hundred twenty-seven thousand, forty-two".