77561342 has 8 divisors (see below), whose sum is σ = 117743976. Its totient is φ = 38313352.

The previous prime is 77561333. The next prime is 77561347. The reversal of 77561342 is 24316577.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77561347) 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, 233453 + ... + 233784.

It is an arithmetic number, because the mean of its divisors is an integer number (14717997).

Almost surely, 2^77561342 is an apocalyptic number.

77561342 is a deficient number, since it is larger than the sum of its proper divisors (40182634).

77561342 is a wasteful number, since it uses less digits than its factorization.

77561342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 467322.

The product of its digits is 35280, while the sum is 35.

The square root of 77561342 is about 8806.8917331826. The cubic root of 77561342 is about 426.4634064664.

The spelling of 77561342 in words is "seventy-seven million, five hundred sixty-one thousand, three hundred forty-two".