654664077 has 24 divisors (see below), whose sum is σ = 959291424. Its totient is φ = 430161504.

The previous prime is 654664063. The next prime is 654664079. The reversal of 654664077 is 770466456.

It is a happy number.

It is not a de Polignac number, because 654664077 - 2⁶ = 654664013 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (654664079) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 437743 + ... + 439235.

It is an arithmetic number, because the mean of its divisors is an integer number (39970476).

Almost surely, 2^654664077 is an apocalyptic number.

It is an amenable number.

654664077 is a deficient number, since it is larger than the sum of its proper divisors (304627347).

654664077 is a wasteful number, since it uses less digits than its factorization.

654664077 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2169 (or 2166 counting only the distinct ones).

The product of its (nonzero) digits is 846720, while the sum is 45.

The square root of 654664077 is about 25586.4041436072. The cubic root of 654664077 is about 868.3060698146.

The spelling of 654664077 in words is "six hundred fifty-four million, six hundred sixty-four thousand, seventy-seven".