1063990 has 16 divisors (see below), whose sum is σ = 1935648. Its totient is φ = 421056.

The previous prime is 1063987. The next prime is 1063999. The reversal of 1063990 is 993601.

It is a happy number.

It is a super-2 number, since 2×1063990² = 2264149440200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1063999) 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, 514 + ... + 1546.

It is an arithmetic number, because the mean of its divisors is an integer number (120978).

2^1063990 is an apocalyptic number.

1063990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1063990 is a deficient number, since it is larger than the sum of its proper divisors (871658).

1063990 is a wasteful number, since it uses less digits than its factorization.

1063990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1143.

The product of its (nonzero) digits is 1458, while the sum is 28.

The square root of 1063990 is about 1031.4989093547. The cubic root of 1063990 is about 102.0890546102.

It can be divided in two parts, 106 and 3990, that added together give a 12-th power (4096 = 2¹²).

The spelling of 1063990 in words is "one million, sixty-three thousand, nine hundred ninety".