61274629 has 4 divisors (see below), whose sum is σ = 65988076. Its totient is φ = 56561184.

The previous prime is 61274617. The next prime is 61274641. The reversal of 61274629 is 92647216.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (61274617) and next prime (61274641).

It can be written as a sum of positive squares in 2 ways, for example, as 25250625 + 36024004 = 5025^2 + 6002^2 .

It is a cyclic number.

It is not a de Polignac number, because 61274629 - 2²¹ = 59177477 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61274659) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2356704 + ... + 2356729.

It is an arithmetic number, because the mean of its divisors is an integer number (16497019).

Almost surely, 2^61274629 is an apocalyptic number.

It is an amenable number.

61274629 is a deficient number, since it is larger than the sum of its proper divisors (4713447).

61274629 is a wasteful number, since it uses less digits than its factorization.

61274629 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4713446.

The product of its digits is 36288, while the sum is 37.

The square root of 61274629 is about 7827.8112521956. The cubic root of 61274629 is about 394.2395860447.

The spelling of 61274629 in words is "sixty-one million, two hundred seventy-four thousand, six hundred twenty-nine".