655166040 has 64 divisors (see below), whose sum is σ = 2050963200. Its totient is φ = 167114112.

The previous prime is 655166027. The next prime is 655166053. The reversal of 655166040 is 40661556.

It is an interprime number because it is at equal distance from previous prime (655166027) and next prime (655166053).

It is a super-3 number, since 3×655166040³ (a number of 27 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 655165992 and 655166010.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 115930 + ... + 121449.

It is an arithmetic number, because the mean of its divisors is an integer number (32046300).

Almost surely, 2^655166040 is an apocalyptic number.

655166040 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

655166040 is an abundant number, since it is smaller than the sum of its proper divisors (1395797160).

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

655166040 is a wasteful number, since it uses less digits than its factorization.

655166040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 237416 (or 237412 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 33.

The square root of 655166040 is about 25596.2114384141. The cubic root of 655166040 is about 868.5279373772.

The spelling of 655166040 in words is "six hundred fifty-five million, one hundred sixty-six thousand, forty".