655046646 has 16 divisors (see below), whose sum is σ = 1311970608. Its totient is φ = 218036000.

The previous prime is 655046621. The next prime is 655046653. The reversal of 655046646 is 646640556.

It is a happy number.

It is a super-2 number, since 2×655046646² = 858172216871698632, which contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 655046598 and 655046607.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 73665 + ... + 82076.

It is an arithmetic number, because the mean of its divisors is an integer number (81998163).

Almost surely, 2^655046646 is an apocalyptic number.

655046646 is an abundant number, since it is smaller than the sum of its proper divisors (656923962).

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

655046646 is a wasteful number, since it uses less digits than its factorization.

655046646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156447.

The product of its (nonzero) digits is 518400, while the sum is 42.

The square root of 655046646 is about 25593.8790729346. The cubic root of 655046646 is about 868.4751755235.

The spelling of 655046646 in words is "six hundred fifty-five million, forty-six thousand, six hundred forty-six".