97709644 has 12 divisors (see below), whose sum is σ = 176507968. Its totient is φ = 47278800.

The previous prime is 97709641. The next prime is 97709657. The reversal of 97709644 is 44690779.

It is a hoax number, since the sum of its digits (46) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 97709594 and 97709603.

It is not an unprimeable number, because it can be changed into a prime (97709641) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 393867 + ... + 394114.

Almost surely, 2^97709644 is an apocalyptic number.

It is an amenable number.

97709644 is a deficient number, since it is larger than the sum of its proper divisors (78798324).

97709644 is a wasteful number, since it uses less digits than its factorization.

97709644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 788016 (or 788014 counting only the distinct ones).

The product of its (nonzero) digits is 381024, while the sum is 46.

The square root of 97709644 is about 9884.8188653106. The cubic root of 97709644 is about 460.5878495813.

The spelling of 97709644 in words is "ninety-seven million, seven hundred nine thousand, six hundred forty-four".