612666396 has 24 divisors (see below), whose sum is σ = 1588394640. Its totient is φ = 204222096.

The previous prime is 612666391. The next prime is 612666401. The reversal of 612666396 is 693666216.

It is an interprime number because it is at equal distance from previous prime (612666391) and next prime (612666401).

It is a super-2 number, since 2×612666396² = 750720225575257632, which contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (612666391) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2836311 + ... + 2836526.

It is an arithmetic number, because the mean of its divisors is an integer number (66183110).

Almost surely, 2^612666396 is an apocalyptic number.

It is an amenable number.

612666396 is an abundant number, since it is smaller than the sum of its proper divisors (975728244).

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

612666396 is a wasteful number, since it uses less digits than its factorization.

612666396 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5672850 (or 5672842 counting only the distinct ones).

The product of its digits is 419904, while the sum is 45.

The square root of 612666396 is about 24752.0988201001. The cubic root of 612666396 is about 849.3265235066.

The spelling of 612666396 in words is "six hundred twelve million, six hundred sixty-six thousand, three hundred ninety-six".