662074561 has 4 divisors (see below), whose sum is σ = 662500800. Its totient is φ = 661648324.

The previous prime is 662074549. The next prime is 662074583. The reversal of 662074561 is 165470266.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 662074561 - 2⁷ = 662074433 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 662074561.

It is not an unprimeable number, because it can be changed into a prime (662074531) 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, 210781 + ... + 213898.

It is an arithmetic number, because the mean of its divisors is an integer number (165625200).

Almost surely, 2^662074561 is an apocalyptic number.

It is an amenable number.

662074561 is a deficient number, since it is larger than the sum of its proper divisors (426239).

662074561 is a wasteful number, since it uses less digits than its factorization.

662074561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 426238.

The product of its (nonzero) digits is 60480, while the sum is 37.

The square root of 662074561 is about 25730.8095675204. The cubic root of 662074561 is about 871.5700547373.

The spelling of 662074561 in words is "six hundred sixty-two million, seventy-four thousand, five hundred sixty-one".