77491962 has 12 divisors (see below), whose sum is σ = 167899290. Its totient is φ = 25830648.

The previous prime is 77491961. The next prime is 77491963. The reversal of 77491962 is 26919477.

77491962 is a `hidden beast` number, since 77 + 491 + 96 + 2 = 666.

It is an interprime number because it is at equal distance from previous prime (77491961) and next prime (77491963).

It can be written as a sum of positive squares in only one way, i.e., 73770921 + 3721041 = 8589^2 + 1929^2 .

It is not an unprimeable number, because it can be changed into a prime (77491961) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2152537 + ... + 2152572.

Almost surely, 2^77491962 is an apocalyptic number.

77491962 is an abundant number, since it is smaller than the sum of its proper divisors (90407328).

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

77491962 is a wasteful number, since it uses less digits than its factorization.

77491962 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4305117 (or 4305114 counting only the distinct ones).

The product of its digits is 190512, while the sum is 45.

The square root of 77491962 is about 8802.9518912692. The cubic root of 77491962 is about 426.3362088311.

The spelling of 77491962 in words is "seventy-seven million, four hundred ninety-one thousand, nine hundred sixty-two".