77485969 has 8 divisors (see below), whose sum is σ = 85792608. Its totient is φ = 69389760.

The previous prime is 77485963. The next prime is 77485987. The reversal of 77485969 is 96958477.

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

It is not a de Polignac number, because 77485969 - 2¹¹ = 77483921 is a prime.

It is a super-2 number, since 2×77485969² = 12008150783737922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (77485963) 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, 51832 + ... + 53305.

It is an arithmetic number, because the mean of its divisors is an integer number (10724076).

Almost surely, 2^77485969 is an apocalyptic number.

It is an amenable number.

77485969 is a deficient number, since it is larger than the sum of its proper divisors (8306639).

77485969 is a wasteful number, since it uses less digits than its factorization.

77485969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105215.

The product of its digits is 3810240, while the sum is 55.

The square root of 77485969 is about 8802.6114875076. The cubic root of 77485969 is about 426.3252180191.

The spelling of 77485969 in words is "seventy-seven million, four hundred eighty-five thousand, nine hundred sixty-nine".