77283613 has 4 divisors (see below), whose sum is σ = 84309408. Its totient is φ = 70257820.

The previous prime is 77283587. The next prime is 77283667. The reversal of 77283613 is 31638277.

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: 31638277 = 11 ⋅2876207.

It is a cyclic number.

It is not a de Polignac number, because 77283613 - 2¹⁷ = 77152541 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 (77283313) 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, 3512881 + ... + 3512902.

It is an arithmetic number, because the mean of its divisors is an integer number (21077352).

Almost surely, 2^77283613 is an apocalyptic number.

It is an amenable number.

77283613 is a deficient number, since it is larger than the sum of its proper divisors (7025795).

77283613 is a wasteful number, since it uses less digits than its factorization.

77283613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7025794.

The product of its digits is 42336, while the sum is 37.

The square root of 77283613 is about 8791.1098844230. The cubic root of 77283613 is about 425.9537758334.

The spelling of 77283613 in words is "seventy-seven million, two hundred eighty-three thousand, six hundred thirteen".