1201087605 has 32 divisors (see below), whose sum is σ = 1949036544. Its totient is φ = 631515456.

The previous prime is 1201087571. The next prime is 1201087607. The reversal of 1201087605 is 5067801021.

It is not a de Polignac number, because 1201087605 - 2⁶ = 1201087541 is a prime.

It is a super-2 number, since 2×1201087605² = 2885222869769272050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1201087607) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 904452 + ... + 905778.

It is an arithmetic number, because the mean of its divisors is an integer number (60907392).

Almost surely, 2^1201087605 is an apocalyptic number.

1201087605 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1201087605 is a deficient number, since it is larger than the sum of its proper divisors (747948939).

1201087605 is a wasteful number, since it uses less digits than its factorization.

1201087605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2145.

The product of its (nonzero) digits is 3360, while the sum is 30.

The square root of 1201087605 is about 34656.7108220039. The cubic root of 1201087605 is about 1062.9795146775.

Adding to 1201087605 its reverse (5067801021), we get a palindrome (6268888626).

The spelling of 1201087605 in words is "one billion, two hundred one million, eighty-seven thousand, six hundred five".