70649631784 has 8 divisors (see below), whose sum is σ = 132468059610. Its totient is φ = 35324815888.

The previous prime is 70649631779. The next prime is 70649631803. The reversal of 70649631784 is 48713694607.

It can be written as a sum of positive squares in only one way, i.e., 59238692100 + 11410939684 = 243390^2 + 106822^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4415601979 + ... + 4415601994.

Almost surely, 2^70649631784 is an apocalyptic number.

It is an amenable number.

70649631784 is a deficient number, since it is larger than the sum of its proper divisors (61818427826).

70649631784 is a wasteful number, since it uses less digits than its factorization.

70649631784 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8831203979 (or 8831203975 counting only the distinct ones).

The product of its (nonzero) digits is 6096384, while the sum is 55.

The spelling of 70649631784 in words is "seventy billion, six hundred forty-nine million, six hundred thirty-one thousand, seven hundred eighty-four".