99973061 has 2 divisors, whose sum is σ = 99973062. Its totient is φ = 99973060.

The previous prime is 99973057. The next prime is 99973091. The reversal of 99973061 is 16037999.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 99880036 + 93025 = 9994^2 + 305^2 .

It is a cyclic number.

It is not a de Polignac number, because 99973061 - 2² = 99973057 is a prime.

It is a super-2 number, since 2×99973061² = 19989225851419442, which contains 22 as substring.

It is a Chen prime.

It is equal to p_5759990 and since 99973061 and 5759990 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99973091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49986530 + 49986531.

It is an arithmetic number, because the mean of its divisors is an integer number (49986531).

Almost surely, 2^99973061 is an apocalyptic number.

It is an amenable number.

99973061 is a deficient number, since it is larger than the sum of its proper divisors (1).

99973061 is an equidigital number, since it uses as much as digits as its factorization.

99973061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 91854, while the sum is 44.

The square root of 99973061 is about 9998.6529592741. The cubic root of 99973061 is about 464.1171996975.

The spelling of 99973061 in words is "ninety-nine million, nine hundred seventy-three thousand, sixty-one".