74006513 has 6 divisors (see below), whose sum is σ = 86089266. Its totient is φ = 63434112.

The previous prime is 74006509. The next prime is 74006561. The reversal of 74006513 is 31560047.

It can be written as a sum of positive squares in only one way, i.e., 64128064 + 9878449 = 8008^2 + 3143^2 .

It is not a de Polignac number, because 74006513 - 2² = 74006509 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (74006213) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 755120 + ... + 755217.

It is an arithmetic number, because the mean of its divisors is an integer number (14348211).

Almost surely, 2^74006513 is an apocalyptic number.

It is an amenable number.

74006513 is a deficient number, since it is larger than the sum of its proper divisors (12082753).

74006513 is a wasteful number, since it uses less digits than its factorization.

74006513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1510351 (or 1510344 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 26.

The square root of 74006513 is about 8602.7038191490. The cubic root of 74006513 is about 419.8459620309.

The spelling of 74006513 in words is "seventy-four million, six thousand, five hundred thirteen".