74626945 has 16 divisors (see below), whose sum is σ = 91946880. Its totient is φ = 58126464.

The previous prime is 74626933. The next prime is 74626961. The reversal of 74626945 is 54962647.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 74626945 - 2¹⁹ = 74102657 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28564 + ... + 31066.

It is an arithmetic number, because the mean of its divisors is an integer number (5746680).

Almost surely, 2^74626945 is an apocalyptic number.

It is an amenable number.

74626945 is a deficient number, since it is larger than the sum of its proper divisors (17319935).

74626945 is a wasteful number, since it uses less digits than its factorization.

74626945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2664.

The product of its digits is 362880, while the sum is 43.

The square root of 74626945 is about 8638.6888472731. The cubic root of 74626945 is about 421.0159550715.

It can be divided in two parts, 746 and 26945, that multiplied together give a triangular number (20100970 = T₆₃₄₀).

The spelling of 74626945 in words is "seventy-four million, six hundred twenty-six thousand, nine hundred forty-five".