1207666406 has 8 divisors (see below), whose sum is σ = 1837013904. Its totient is φ = 595328440.

The previous prime is 1207666399. The next prime is 1207666423. The reversal of 1207666406 is 6046667021.

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

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1207666406.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4252205 + ... + 4252488.

It is an arithmetic number, because the mean of its divisors is an integer number (229626738).

Almost surely, 2^1207666406 is an apocalyptic number.

1207666406 is a deficient number, since it is larger than the sum of its proper divisors (629347498).

1207666406 is an equidigital number, since it uses as much as digits as its factorization.

1207666406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8504766.

The product of its (nonzero) digits is 72576, while the sum is 38.

The square root of 1207666406 is about 34751.4950182003. The cubic root of 1207666406 is about 1064.9167592739.

The spelling of 1207666406 in words is "one billion, two hundred seven million, six hundred sixty-six thousand, four hundred six".