77069838 has 16 divisors (see below), whose sum is σ = 154406736. Its totient is φ = 25645440.

The previous prime is 77069821. The next prime is 77069879. The reversal of 77069838 is 83896077.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7273 + ... + 14388.

It is an arithmetic number, because the mean of its divisors is an integer number (9650421).

Almost surely, 2^77069838 is an apocalyptic number.

77069838 is an abundant number, since it is smaller than the sum of its proper divisors (77336898).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

77069838 is a wasteful number, since it uses less digits than its factorization.

77069838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22259.

The product of its (nonzero) digits is 508032, while the sum is 48.

The square root of 77069838 is about 8778.9428748569. The cubic root of 77069838 is about 425.5606681045.

The spelling of 77069838 in words is "seventy-seven million, sixty-nine thousand, eight hundred thirty-eight".