662964261 has 24 divisors (see below), whose sum is σ = 913086720. Its totient is φ = 427859712.

The previous prime is 662964221. The next prime is 662964343. The reversal of 662964261 is 162469266.

It is not a de Polignac number, because 662964261 - 2¹⁷ = 662833189 is a prime.

It is a super-2 number, since 2×662964261² = 879043222726552242, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (662964221) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1383820 + ... + 1384298.

It is an arithmetic number, because the mean of its divisors is an integer number (38045280).

Almost surely, 2^662964261 is an apocalyptic number.

It is an amenable number.

662964261 is a deficient number, since it is larger than the sum of its proper divisors (250122459).

662964261 is a wasteful number, since it uses less digits than its factorization.

662964261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 893 (or 856 counting only the distinct ones).

The product of its digits is 186624, while the sum is 42.

The square root of 662964261 is about 25748.0923759412. The cubic root of 662964261 is about 871.9602871156.

The spelling of 662964261 in words is "six hundred sixty-two million, nine hundred sixty-four thousand, two hundred sixty-one".