612871406 has 8 divisors (see below), whose sum is σ = 1050636720. Its totient is φ = 262659168.

The previous prime is 612871387. The next prime is 612871417. The reversal of 612871406 is 604178216.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×612871406² = 751222720584833672, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21888251 + ... + 21888278.

It is an arithmetic number, because the mean of its divisors is an integer number (131329590).

Almost surely, 2^612871406 is an apocalyptic number.

612871406 is a deficient number, since it is larger than the sum of its proper divisors (437765314).

612871406 is a wasteful number, since it uses less digits than its factorization.

612871406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43776538.

The product of its (nonzero) digits is 16128, while the sum is 35.

The square root of 612871406 is about 24756.2397387002. The cubic root of 612871406 is about 849.4212466239.

The spelling of 612871406 in words is "six hundred twelve million, eight hundred seventy-one thousand, four hundred six".