1606502540 has 24 divisors (see below), whose sum is σ = 3376879632. Its totient is φ = 641986880.

The previous prime is 1606502537. The next prime is 1606502543. The reversal of 1606502540 is 452056061.

It is an interprime number because it is at equal distance from previous prime (1606502537) and next prime (1606502543).

It is a super-2 number, since 2×1606502540² = 5161700822052903200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1606502543) 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, 16634 + ... + 59073.

It is an arithmetic number, because the mean of its divisors is an integer number (140703318).

Almost surely, 2^1606502540 is an apocalyptic number.

1606502540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1606502540 is an abundant number, since it is smaller than the sum of its proper divisors (1770377092).

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

1606502540 is a wasteful number, since it uses less digits than its factorization.

1606502540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76777 (or 76775 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 29.

The square root of 1606502540 is about 40081.1993333533. The cubic root of 1606502540 is about 1171.1894155131.

The spelling of 1606502540 in words is "one billion, six hundred six million, five hundred two thousand, five hundred forty".