97505649 has 24 divisors (see below), whose sum is σ = 143567424. Its totient is φ = 63756000.

The previous prime is 97505621. The next prime is 97505677. The reversal of 97505649 is 94650579.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (97505621) and next prime (97505677).

It is not a de Polignac number, because 97505649 - 2⁷ = 97505521 is a prime.

It is a super-2 number, since 2×97505649² = 19014703173822402, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (97505689) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 211279 + ... + 211739.

It is an arithmetic number, because the mean of its divisors is an integer number (5981976).

Almost surely, 2^97505649 is an apocalyptic number.

It is an amenable number.

97505649 is a deficient number, since it is larger than the sum of its proper divisors (46061775).

97505649 is a wasteful number, since it uses less digits than its factorization.

97505649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 869 (or 866 counting only the distinct ones).

The product of its (nonzero) digits is 340200, while the sum is 45.

The square root of 97505649 is about 9874.4948731568. The cubic root of 97505649 is about 460.2670928382.

The spelling of 97505649 in words is "ninety-seven million, five hundred five thousand, six hundred forty-nine".