1406550690 has 64 divisors (see below), whose sum is σ = 3755445120. Its totient is φ = 374616000.

The previous prime is 1406550679. The next prime is 1406550703. The reversal of 1406550690 is 960556041.

1406550690 is a `hidden beast` number, since 1 + 4 + 0 + 65 + 506 + 90 = 666.

It is a super-2 number, since 2×1406550690² = 3956769687078952200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 252940 + ... + 258440.

It is an arithmetic number, because the mean of its divisors is an integer number (58678830).

Almost surely, 2^1406550690 is an apocalyptic number.

1406550690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1406550690 is an abundant number, since it is smaller than the sum of its proper divisors (2348894430).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1406550690 is a wasteful number, since it uses less digits than its factorization.

1406550690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6464 (or 6458 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 36.

The square root of 1406550690 is about 37504.0089857071. The cubic root of 1406550690 is about 1120.4310336059.

The spelling of 1406550690 in words is "one billion, four hundred six million, five hundred fifty thousand, six hundred ninety".