1606739487 has 8 divisors (see below), whose sum is σ = 2144075904. Its totient is φ = 1070281368.

The previous prime is 1606739483. The next prime is 1606739521. The reversal of 1606739487 is 7849376061.

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

It is not a de Polignac number, because 1606739487 - 2² = 1606739483 is a prime.

It is a super-2 number, since 2×1606739487² = 5163223558170046338, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1606739483) 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 7 ways as a sum of consecutive naturals, for example, 215293 + ... + 222630.

It is an arithmetic number, because the mean of its divisors is an integer number (268009488).

Almost surely, 2^1606739487 is an apocalyptic number.

1606739487 is a deficient number, since it is larger than the sum of its proper divisors (537336417).

1606739487 is a wasteful number, since it uses less digits than its factorization.

1606739487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 439149.

The product of its (nonzero) digits is 1524096, while the sum is 51.

The square root of 1606739487 is about 40084.1550615702. The cubic root of 1606739487 is about 1171.2469932157.

The spelling of 1606739487 in words is "one billion, six hundred six million, seven hundred thirty-nine thousand, four hundred eighty-seven".