77490503 has 4 divisors (see below), whose sum is σ = 77555088. Its totient is φ = 77425920.

The previous prime is 77490499. The next prime is 77490521. The reversal of 77490503 is 30509477.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 30509477 = 23 ⋅1326499.

It is a cyclic number.

It is not a de Polignac number, because 77490503 - 2² = 77490499 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 (77490593) 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, 30458 + ... + 32903.

It is an arithmetic number, because the mean of its divisors is an integer number (19388772).

Almost surely, 2^77490503 is an apocalyptic number.

77490503 is a deficient number, since it is larger than the sum of its proper divisors (64585).

77490503 is a wasteful number, since it uses less digits than its factorization.

77490503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64584.

The product of its (nonzero) digits is 26460, while the sum is 35.

The square root of 77490503 is about 8802.8690209499. The cubic root of 77490503 is about 426.3335331625. Note that the first 3 decimals are identical.

The spelling of 77490503 in words is "seventy-seven million, four hundred ninety thousand, five hundred three".