97900145 has 16 divisors (see below), whose sum is σ = 134466048. Its totient is φ = 67030080.

The previous prime is 97900123. The next prime is 97900147. The reversal of 97900145 is 54100979.

It is not a de Polignac number, because 97900145 - 2¹⁰ = 97899121 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (97900147) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27032 + ... + 30438.

It is an arithmetic number, because the mean of its divisors is an integer number (8404128).

Almost surely, 2^97900145 is an apocalyptic number.

It is an amenable number.

97900145 is a deficient number, since it is larger than the sum of its proper divisors (36565903).

97900145 is a wasteful number, since it uses less digits than its factorization.

97900145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4240.

The product of its (nonzero) digits is 11340, while the sum is 35.

The square root of 97900145 is about 9894.4502121139. The cubic root of 97900145 is about 460.8869858155.

The spelling of 97900145 in words is "ninety-seven million, nine hundred thousand, one hundred forty-five".