655213746 has 64 divisors (see below), whose sum is σ = 1536952320. Its totient is φ = 184080960.

The previous prime is 655213739. The next prime is 655213753. The reversal of 655213746 is 647312556.

It is an interprime number because it is at equal distance from previous prime (655213739) and next prime (655213753).

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 53380 + ... + 64496.

It is an arithmetic number, because the mean of its divisors is an integer number (24014880).

Almost surely, 2^655213746 is an apocalyptic number.

655213746 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 655213746, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (768476160).

655213746 is an abundant number, since it is smaller than the sum of its proper divisors (881738574).

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

655213746 is a wasteful number, since it uses less digits than its factorization.

655213746 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11199.

The product of its digits is 151200, while the sum is 39.

The square root of 655213746 is about 25597.1433171751. The cubic root of 655213746 is about 868.5490175236.

The spelling of 655213746 in words is "six hundred fifty-five million, two hundred thirteen thousand, seven hundred forty-six".