74661190564 has 9 divisors (see below), whose sum is σ = 130658039841. Its totient is φ = 37330322040.

The previous prime is 74661190447. The next prime is 74661190567. The reversal of 74661190564 is 46509116647.

The square root of 74661190564 is 273242.

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

It can be written as a sum of positive squares in only one way, i.e., 14675384164 + 59985806400 = 121142^2 + 244920^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (74661190567) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 478174 + ... + 614794.

Almost surely, 2^74661190564 is an apocalyptic number.

74661190564 is the 273242-nd square number.

It is an amenable number.

74661190564 is a deficient number, since it is larger than the sum of its proper divisors (55996849277).

74661190564 is an frugal number, since it uses more digits than its factorization.

74661190564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 273246 (or 136623 counting only the distinct ones).

The product of its (nonzero) digits is 1088640, while the sum is 49.

Multiplying 74661190564 by its sum of digits (49), we get a square (3658398337636 = 1912694²).

It can be divided in two parts, 74661 and 190564, that added together give a square (265225 = 515²).

The spelling of 74661190564 in words is "seventy-four billion, six hundred sixty-one million, one hundred ninety thousand, five hundred sixty-four".