654102061 has 4 divisors (see below), whose sum is σ = 655162812. Its totient is φ = 653041312.

The previous prime is 654102049. The next prime is 654102073. The reversal of 654102061 is 160201456.

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

It is an interprime number because it is at equal distance from previous prime (654102049) and next prime (654102073).

It can be written as a sum of positive squares in 2 ways, for example, as 153908836 + 500193225 = 12406^2 + 22365^2 .

It is a cyclic number.

It is not a de Polignac number, because 654102061 - 2⁹ = 654101549 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (654102011) 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, 529450 + ... + 530683.

It is an arithmetic number, because the mean of its divisors is an integer number (163790703).

Almost surely, 2^654102061 is an apocalyptic number.

It is an amenable number.

654102061 is a deficient number, since it is larger than the sum of its proper divisors (1060751).

654102061 is a wasteful number, since it uses less digits than its factorization.

654102061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1060750.

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 654102061 is about 25575.4190777004. The cubic root of 654102061 is about 868.0575242197.

The spelling of 654102061 in words is "six hundred fifty-four million, one hundred two thousand, sixty-one".