77528073 has 8 divisors (see below), whose sum is σ = 118138048. Its totient is φ = 44301744.

The previous prime is 77528063. The next prime is 77528111. The reversal of 77528073 is 37082577.

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

It is not a de Polignac number, because 77528073 - 2²² = 73333769 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (77528023) 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, 1845886 + ... + 1845927.

It is an arithmetic number, because the mean of its divisors is an integer number (14767256).

Almost surely, 2^77528073 is an apocalyptic number.

It is an amenable number.

77528073 is a deficient number, since it is larger than the sum of its proper divisors (40609975).

77528073 is a wasteful number, since it uses less digits than its factorization.

77528073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3691823.

The product of its (nonzero) digits is 82320, while the sum is 39.

The square root of 77528073 is about 8805.0027257236. The cubic root of 77528073 is about 426.4024223052.

The spelling of 77528073 in words is "seventy-seven million, five hundred twenty-eight thousand, seventy-three".