73690553 has 4 divisors (see below), whose sum is σ = 74790480. Its totient is φ = 72590628.

The previous prime is 73690523. The next prime is 73690583. The reversal of 73690553 is 35509637.

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, and also an emirpimes, since its reverse is a distinct semiprime: 35509637 = 4099 ⋅8663.

It is an interprime number because it is at equal distance from previous prime (73690523) and next prime (73690583).

It is a cyclic number.

It is not a de Polignac number, because 73690553 - 2¹⁶ = 73625017 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (73690523) 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, 549863 + ... + 549996.

It is an arithmetic number, because the mean of its divisors is an integer number (18697620).

Almost surely, 2^73690553 is an apocalyptic number.

It is an amenable number.

73690553 is a deficient number, since it is larger than the sum of its proper divisors (1099927).

73690553 is a wasteful number, since it uses less digits than its factorization.

73690553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1099926.

The product of its (nonzero) digits is 85050, while the sum is 38.

The square root of 73690553 is about 8584.3201827518. The cubic root of 73690553 is about 419.2476193677.

The spelling of 73690553 in words is "seventy-three million, six hundred ninety thousand, five hundred fifty-three".