64677042 has 20 divisors (see below), whose sum is σ = 144924846. Its totient is φ = 21558960.

The previous prime is 64677037. The next prime is 64677071. The reversal of 64677042 is 24077646.

64677042 is a `hidden beast` number, since 646 + 7 + 7 + 0 + 4 + 2 = 666.

It can be written as a sum of positive squares in only one way, i.e., 38452401 + 26224641 = 6201^2 + 5121^2 .

It is a junction number, because it is equal to n+sod(n) for n = 64676988 and 64677006.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 199459 + ... + 199782.

Almost surely, 2^64677042 is an apocalyptic number.

64677042 is an abundant number, since it is smaller than the sum of its proper divisors (80247804).

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

64677042 is a wasteful number, since it uses less digits than its factorization.

64677042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 399255 (or 399246 counting only the distinct ones).

The product of its (nonzero) digits is 56448, while the sum is 36.

The square root of 64677042 is about 8042.2038024412. The cubic root of 64677042 is about 401.4055593886.

The spelling of 64677042 in words is "sixty-four million, six hundred seventy-seven thousand, forty-two".