1260208621 has 8 divisors (see below), whose sum is σ = 1486697984. Its totient is φ = 1045334160.

The previous prime is 1260208597. The next prime is 1260208633. The reversal of 1260208621 is 1268020621.

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

It is a cyclic number.

It is not a de Polignac number, because 1260208621 - 2²⁷ = 1125990893 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1260208621.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1260208661) 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, 2903490 + ... + 2903923.

It is an arithmetic number, because the mean of its divisors is an integer number (185837248).

Almost surely, 2^1260208621 is an apocalyptic number.

It is an amenable number.

1260208621 is a deficient number, since it is larger than the sum of its proper divisors (226489363).

1260208621 is an equidigital number, since it uses as much as digits as its factorization.

1260208621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5807451.

The product of its (nonzero) digits is 2304, while the sum is 28.

The square root of 1260208621 is about 35499.4171923991. The cubic root of 1260208621 is about 1080.1419055077.

The spelling of 1260208621 in words is "one billion, two hundred sixty million, two hundred eight thousand, six hundred twenty-one".