1623692674564 has 27 divisors (see below), whose sum is σ = 2853199582023. Its totient is φ = 808506549000.

The previous prime is 1623692674543. The next prime is 1623692674567. The reversal of 1623692674564 is 4654762963261.

The square root of 1623692674564 is 1274242.

It is a perfect power (a square), and thus also a powerful number.

It is a super-2 number, since 2×1623692674564² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1623692674567) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 690637989 + ... + 690640339.

Almost surely, 2^{1623692674564} is an apocalyptic number.

1623692674564 is the 1274242-nd square number.

It is an amenable number.

1623692674564 is a deficient number, since it is larger than the sum of its proper divisors (1229506907459).

1623692674564 is an frugal number, since it uses more digits than its factorization.

1623692674564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5248 (or 2624 counting only the distinct ones).

The product of its digits is 78382080, while the sum is 61.

It can be divided in two parts, 1623692 and 674564, that added together give a square (2298256 = 1516²).

The spelling of 1623692674564 in words is "one trillion, six hundred twenty-three billion, six hundred ninety-two million, six hundred seventy-four thousand, five hundred sixty-four".