1406690649 has 96 divisors (see below), whose sum is σ = 2660636160. Its totient is φ = 695844864.

The previous prime is 1406690647. The next prime is 1406690651. The reversal of 1406690649 is 9460966041.

It is an interprime number because it is at equal distance from previous prime (1406690647) and next prime (1406690651).

It is not a de Polignac number, because 1406690649 - 2¹ = 1406690647 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1406690647) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 997657 + ... + 999065.

It is an arithmetic number, because the mean of its divisors is an integer number (27714960).

Almost surely, 2^1406690649 is an apocalyptic number.

It is an amenable number.

1406690649 is a deficient number, since it is larger than the sum of its proper divisors (1253945511).

1406690649 is a wasteful number, since it uses less digits than its factorization.

1406690649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1511 (or 1508 counting only the distinct ones).

The product of its (nonzero) digits is 279936, while the sum is 45.

The square root of 1406690649 is about 37505.8748598136. The cubic root of 1406690649 is about 1120.4681952494.

The spelling of 1406690649 in words is "one billion, four hundred six million, six hundred ninety thousand, six hundred forty-nine".