1406666437 has 8 divisors (see below), whose sum is σ = 1537248960. Its totient is φ = 1276534560.

The previous prime is 1406666423. The next prime is 1406666461. The reversal of 1406666437 is 7346666041.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1406666437 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1406666393 and 1406666402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1406666467) 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, 106113 + ... + 118630.

It is an arithmetic number, because the mean of its divisors is an integer number (192156120).

Almost surely, 2^1406666437 is an apocalyptic number.

It is an amenable number.

1406666437 is a deficient number, since it is larger than the sum of its proper divisors (130582523).

1406666437 is a wasteful number, since it uses less digits than its factorization.

1406666437 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 225323.

The product of its (nonzero) digits is 435456, while the sum is 43.

The square root of 1406666437 is about 37505.5520823251. The cubic root of 1406666437 is about 1120.4617667022.

The spelling of 1406666437 in words is "one billion, four hundred six million, six hundred sixty-six thousand, four hundred thirty-seven".