77951146 has 16 divisors (see below), whose sum is σ = 143910144. Its totient is φ = 30837744.

The previous prime is 77951123. The next prime is 77951147. The reversal of 77951146 is 64115977.

It is a junction number, because it is equal to n+sod(n) for n = 77951099 and 77951108.

It is not an unprimeable number, because it can be changed into a prime (77951147) 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, 213970 + ... + 214333.

It is an arithmetic number, because the mean of its divisors is an integer number (8994384).

Almost surely, 2^77951146 is an apocalyptic number.

77951146 is a deficient number, since it is larger than the sum of its proper divisors (65958998).

77951146 is a wasteful number, since it uses less digits than its factorization.

77951146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 428325.

The product of its digits is 52920, while the sum is 40.

The square root of 77951146 is about 8828.9946200006. The cubic root of 77951146 is about 427.1766459211.

The spelling of 77951146 in words is "seventy-seven million, nine hundred fifty-one thousand, one hundred forty-six".