77473613 has 8 divisors (see below), whose sum is σ = 89401728. Its totient is φ = 65760624.

The previous prime is 77473589. The next prime is 77473633. The reversal of 77473613 is 31637477.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 77473613 - 2¹⁰ = 77472589 is a prime.

It is a super-2 number, since 2×77473613² = 12004321422547538, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77473633) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 53006 + ... + 54447.

It is an arithmetic number, because the mean of its divisors is an integer number (11175216).

Almost surely, 2^77473613 is an apocalyptic number.

It is an amenable number.

77473613 is a deficient number, since it is larger than the sum of its proper divisors (11928115).

77473613 is a wasteful number, since it uses less digits than its factorization.

77473613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107563.

The product of its digits is 74088, while the sum is 38.

The square root of 77473613 is about 8801.9096223490. The cubic root of 77473613 is about 426.3025560478.

The spelling of 77473613 in words is "seventy-seven million, four hundred seventy-three thousand, six hundred thirteen".