91617002 has 4 divisors (see below), whose sum is σ = 137425506. Its totient is φ = 45808500.

The previous prime is 91616989. The next prime is 91617023. The reversal of 91617002 is 20071619.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 20071619 = 19 ⋅1056401.

It can be written as a sum of positive squares in only one way, i.e., 86285521 + 5331481 = 9289^2 + 2309^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22904249 + ... + 22904252.

Almost surely, 2^91617002 is an apocalyptic number.

91617002 is a deficient number, since it is larger than the sum of its proper divisors (45808504).

91617002 is a wasteful number, since it uses less digits than its factorization.

91617002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45808503.

The product of its (nonzero) digits is 756, while the sum is 26.

The square root of 91617002 is about 9571.6770735331. The cubic root of 91617002 is about 450.8084266243.

The spelling of 91617002 in words is "ninety-one million, six hundred seventeen thousand, two".