655216410 has 32 divisors (see below), whose sum is σ = 1640891520. Its totient is φ = 167127488.

The previous prime is 655216409. The next prime is 655216427. The reversal of 655216410 is 14612556.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a Curzon 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, 474105 + ... + 475484.

It is an arithmetic number, because the mean of its divisors is an integer number (51277860).

Almost surely, 2^655216410 is an apocalyptic number.

655216410 is an abundant number, since it is smaller than the sum of its proper divisors (985675110).

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

655216410 is a wasteful number, since it uses less digits than its factorization.

655216410 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 949622.

The product of its (nonzero) digits is 7200, while the sum is 30.

The square root of 655216410 is about 25597.1953541789. The cubic root of 655216410 is about 868.5501946517.

Adding to 655216410 its reverse (14612556), we get a palindrome (669828966).

The spelling of 655216410 in words is "six hundred fifty-five million, two hundred sixteen thousand, four hundred ten".