1215064 has 8 divisors (see below), whose sum is σ = 2278260. Its totient is φ = 607528.

The previous prime is 1215047. The next prime is 1215079. The reversal of 1215064 is 4605121.

It is a tau number, because it is divible by the number of its divisors (8).

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 75934 + ... + 75949.

2^1215064 is an apocalyptic number.

It is an amenable number.

1215064 is a deficient number, since it is larger than the sum of its proper divisors (1063196).

1215064 is a wasteful number, since it uses less digits than its factorization.

1215064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151889 (or 151885 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 1215064 is about 1102.2994148597. The cubic root of 1215064 is about 106.7086726917.

The spelling of 1215064 in words is "one million, two hundred fifteen thousand, sixty-four".