612543967 has 4 divisors (see below), whose sum is σ = 700050256. Its totient is φ = 525037680.

The previous prime is 612543937. The next prime is 612544007. The reversal of 612543967 is 769345216.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 612543967 - 2²³ = 604155359 is a prime.

It is a super-2 number, since 2×612543967² = 750420223016194178, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (612543937) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43753134 + ... + 43753147.

It is an arithmetic number, because the mean of its divisors is an integer number (175012564).

Almost surely, 2^612543967 is an apocalyptic number.

612543967 is a deficient number, since it is larger than the sum of its proper divisors (87506289).

612543967 is an equidigital number, since it uses as much as digits as its factorization.

612543967 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87506288.

The product of its digits is 272160, while the sum is 43.

The square root of 612543967 is about 24749.6255931277. The cubic root of 612543967 is about 849.2699461562.

The spelling of 612543967 in words is "six hundred twelve million, five hundred forty-three thousand, nine hundred sixty-seven".