1545664 has 14 divisors (see below), whose sum is σ = 3067304. Its totient is φ = 772800.

The previous prime is 1545653. The next prime is 1545667. The reversal of 1545664 is 4665451.

1545664 = T₁₈₇ + T₁₈₈ + ... + T₂₅₀.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1545667) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12012 + ... + 12139.

2^1545664 is an apocalyptic number.

It is an amenable number.

1545664 is a deficient number, since it is larger than the sum of its proper divisors (1521640).

1545664 is an equidigital number, since it uses as much as digits as its factorization.

1545664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24163 (or 24153 counting only the distinct ones).

The product of its digits is 14400, while the sum is 31.

The square root of 1545664 is about 1243.2473607452. The cubic root of 1545664 is about 115.6214373385.

It can be divided in two parts, 1545 and 664, that added together give a square (2209 = 47²).

The spelling of 1545664 in words is "one million, five hundred forty-five thousand, six hundred sixty-four".