77942746 has 24 divisors (see below), whose sum is σ = 136841184. Its totient is φ = 32616360.

The previous prime is 77942723. The next prime is 77942747. The reversal of 77942746 is 64724977.

It is a junction number, because it is equal to n+sod(n) for n = 77942696 and 77942705.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77942747) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 24381 + ... + 27391.

It is an arithmetic number, because the mean of its divisors is an integer number (5701716).

Almost surely, 2^77942746 is an apocalyptic number.

77942746 is a deficient number, since it is larger than the sum of its proper divisors (58898438).

77942746 is a wasteful number, since it uses less digits than its factorization.

77942746 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3106 (or 3063 counting only the distinct ones).

The product of its digits is 592704, while the sum is 46.

The square root of 77942746 is about 8828.5189018317. The cubic root of 77942746 is about 427.1613012131.

The spelling of 77942746 in words is "seventy-seven million, nine hundred forty-two thousand, seven hundred forty-six".