1061631623 has 32 divisors (see below), whose sum is σ = 1261733760. Its totient is φ = 883814400.

The previous prime is 1061631607. The next prime is 1061631653. The reversal of 1061631623 is 3261361601.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1061631623 - 2⁴ = 1061631607 is a prime.

It is a super-2 number, since 2×1061631623² = 2254123405907228258, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1061631653) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 967211 + ... + 968307.

It is an arithmetic number, because the mean of its divisors is an integer number (39429180).

Almost surely, 2^1061631623 is an apocalyptic number.

1061631623 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1061631623 is a deficient number, since it is larger than the sum of its proper divisors (200102137).

1061631623 is a wasteful number, since it uses less digits than its factorization.

1061631623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1307.

The product of its (nonzero) digits is 3888, while the sum is 29.

The square root of 1061631623 is about 32582.6890081221. The cubic root of 1061631623 is about 1020.1357063450.

The spelling of 1061631623 in words is "one billion, sixty-one million, six hundred thirty-one thousand, six hundred twenty-three".