1566207340 has 12 divisors (see below), whose sum is σ = 3289035456. Its totient is φ = 626482928.

The previous prime is 1566207337. The next prime is 1566207341. The reversal of 1566207340 is 437026651.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1566207296 and 1566207305.

It is not an unprimeable number, because it can be changed into a prime (1566207341) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39155164 + ... + 39155203.

It is an arithmetic number, because the mean of its divisors is an integer number (274086288).

Almost surely, 2^1566207340 is an apocalyptic number.

1566207340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1566207340 is an abundant number, since it is smaller than the sum of its proper divisors (1722828116).

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

1566207340 is a wasteful number, since it uses less digits than its factorization.

1566207340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78310376 (or 78310374 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 34.

The square root of 1566207340 is about 39575.3375222499. The cubic root of 1566207340 is about 1161.3142407288.

The spelling of 1566207340 in words is "one billion, five hundred sixty-six million, two hundred seven thousand, three hundred forty".