1201623 has 8 divisors (see below), whose sum is σ = 1609200. Its totient is φ = 797568.

The previous prime is 1201601. The next prime is 1201633. The reversal of 1201623 is 3261021.

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

It is not a de Polignac number, because 1201623 - 2⁶ = 1201559 is a prime.

1201623 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1201633) 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, 63 + ... + 1551.

It is an arithmetic number, because the mean of its divisors is an integer number (201150).

2^1201623 is an apocalyptic number.

1201623 is a deficient number, since it is larger than the sum of its proper divisors (407577).

1201623 is a wasteful number, since it uses less digits than its factorization.

1201623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1761.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 1201623 is about 1096.1856594574. The cubic root of 1201623 is about 106.3137435264.

Adding to 1201623 its reverse (3261021), we get a palindrome (4462644).

The spelling of 1201623 in words is "one million, two hundred one thousand, six hundred twenty-three".