77315461 has 4 divisors (see below), whose sum is σ = 77490432. Its totient is φ = 77140492.

The previous prime is 77315453. The next prime is 77315471. The reversal of 77315461 is 16451377.

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 77315461 - 2³ = 77315453 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 (77315471) 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, 86821 + ... + 87706.

It is an arithmetic number, because the mean of its divisors is an integer number (19372608).

Almost surely, 2^77315461 is an apocalyptic number.

It is an amenable number.

77315461 is a deficient number, since it is larger than the sum of its proper divisors (174971).

77315461 is a wasteful number, since it uses less digits than its factorization.

77315461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174970.

The product of its digits is 17640, while the sum is 34.

The square root of 77315461 is about 8792.9210732270. The cubic root of 77315461 is about 426.0122785884.

The spelling of 77315461 in words is "seventy-seven million, three hundred fifteen thousand, four hundred sixty-one".