1201615 has 8 divisors (see below), whose sum is σ = 1491840. Its totient is φ = 928032.

The previous prime is 1201601. The next prime is 1201633. The reversal of 1201615 is 5161021.

1201615 = 276² + 277² + ... + 290².

It is a happy number.

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 1201615 - 2⁵ = 1201583 is a prime.

It is a plaindrome in base 16.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3999 + ... + 4288.

It is an arithmetic number, because the mean of its divisors is an integer number (186480).

2^1201615 is an apocalyptic number.

1201615 is a deficient number, since it is larger than the sum of its proper divisors (290225).

1201615 is an equidigital number, since it uses as much as digits as its factorization.

1201615 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8321.

The product of its (nonzero) digits is 60, while the sum is 16.

The square root of 1201615 is about 1096.1820104344. The cubic root of 1201615 is about 106.3135075922.

Adding to 1201615 its reverse (5161021), we get a palindrome (6362636).

The spelling of 1201615 in words is "one million, two hundred one thousand, six hundred fifteen".