61693629 has 16 divisors (see below), whose sum is σ = 87320448. Its totient is φ = 38610432.

The previous prime is 61693607. The next prime is 61693637. The reversal of 61693629 is 92639616.

It is not a de Polignac number, because 61693629 - 2⁹ = 61693117 is a prime.

It is a super-2 number, since 2×61693629² = 7612207718379282, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61693699) 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, 21984 + ... + 24630.

It is an arithmetic number, because the mean of its divisors is an integer number (5457528).

Almost surely, 2^61693629 is an apocalyptic number.

It is an amenable number.

61693629 is a deficient number, since it is larger than the sum of its proper divisors (25626819).

61693629 is a wasteful number, since it uses less digits than its factorization.

61693629 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3124.

The product of its digits is 104976, while the sum is 42.

The square root of 61693629 is about 7854.5292029504. The cubic root of 61693629 is about 395.1361577287.

The spelling of 61693629 in words is "sixty-one million, six hundred ninety-three thousand, six hundred twenty-nine".