97645550 has 12 divisors (see below), whose sum is σ = 181620816. Its totient is φ = 39058200.

The previous prime is 97645529. The next prime is 97645573. The reversal of 97645550 is 5554679.

It is a super-4 number, since 4×97645550⁴ (a number of 33 digits) contains 4444 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 97645498 and 97645507.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 976406 + ... + 976505.

It is an arithmetic number, because the mean of its divisors is an integer number (15135068).

Almost surely, 2^97645550 is an apocalyptic number.

97645550 is a deficient number, since it is larger than the sum of its proper divisors (83975266).

97645550 is a wasteful number, since it uses less digits than its factorization.

97645550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1952923 (or 1952918 counting only the distinct ones).

The product of its (nonzero) digits is 189000, while the sum is 41.

The square root of 97645550 is about 9881.5762912604. The cubic root of 97645550 is about 460.4871178839.

The spelling of 97645550 in words is "ninety-seven million, six hundred forty-five thousand, five hundred fifty".