74661253 has 2 divisors, whose sum is σ = 74661254. Its totient is φ = 74661252.

The previous prime is 74661217. The next prime is 74661269. The reversal of 74661253 is 35216647.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 39413284 + 35247969 = 6278^2 + 5937^2 .

It is a cyclic number.

It is not a de Polignac number, because 74661253 - 2²¹ = 72564101 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (74661053) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37330626 + 37330627.

It is an arithmetic number, because the mean of its divisors is an integer number (37330627).

Almost surely, 2^74661253 is an apocalyptic number.

It is an amenable number.

74661253 is a deficient number, since it is larger than the sum of its proper divisors (1).

74661253 is an equidigital number, since it uses as much as digits as its factorization.

74661253 is an evil number, because the sum of its binary digits is even.

The product of its digits is 30240, while the sum is 34.

The square root of 74661253 is about 8640.6743371105. The cubic root of 74661253 is about 421.0804626140.

The spelling of 74661253 in words is "seventy-four million, six hundred sixty-one thousand, two hundred fifty-three".