73770709 has 4 divisors (see below), whose sum is σ = 75021120. Its totient is φ = 72520300.

The previous prime is 73770707. The next prime is 73770721. The reversal of 73770709 is 90707737.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 73770709 - 2¹ = 73770707 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73770707) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 625117 + ... + 625234.

It is an arithmetic number, because the mean of its divisors is an integer number (18755280).

Almost surely, 2^73770709 is an apocalyptic number.

It is an amenable number.

73770709 is a deficient number, since it is larger than the sum of its proper divisors (1250411).

73770709 is a wasteful number, since it uses less digits than its factorization.

73770709 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1250410.

The product of its (nonzero) digits is 64827, while the sum is 40.

The square root of 73770709 is about 8588.9876586243. The cubic root of 73770709 is about 419.3995747795.

The spelling of 73770709 in words is "seventy-three million, seven hundred seventy thousand, seven hundred nine".