1406687487 has 16 divisors (see below), whose sum is σ = 1919424000. Its totient is φ = 915953472.

The previous prime is 1406687483. The next prime is 1406687507. The reversal of 1406687487 is 7847866041.

It is a happy number.

It is not a de Polignac number, because 1406687487 - 2² = 1406687483 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1406687483) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 60363 + ... + 80355.

It is an arithmetic number, because the mean of its divisors is an integer number (119964000).

Almost surely, 2^1406687487 is an apocalyptic number.

1406687487 is a deficient number, since it is larger than the sum of its proper divisors (512736513).

1406687487 is a wasteful number, since it uses less digits than its factorization.

1406687487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20542.

The product of its (nonzero) digits is 1806336, while the sum is 51.

The square root of 1406687487 is about 37505.8327063938. The cubic root of 1406687487 is about 1120.4673557085.

The spelling of 1406687487 in words is "one billion, four hundred six million, six hundred eighty-seven thousand, four hundred eighty-seven".