61690238 has 8 divisors (see below), whose sum is σ = 92726832. Its totient is φ = 30781296.

The previous prime is 61690177. The next prime is 61690249. The reversal of 61690238 is 83209616.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 61690198 and 61690207.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30695 + ... + 32642.

It is an arithmetic number, because the mean of its divisors is an integer number (11590854).

Almost surely, 2^61690238 is an apocalyptic number.

61690238 is a deficient number, since it is larger than the sum of its proper divisors (31036594).

61690238 is a wasteful number, since it uses less digits than its factorization.

61690238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63826.

The product of its (nonzero) digits is 15552, while the sum is 35.

The square root of 61690238 is about 7854.3133372689. The cubic root of 61690238 is about 395.1289180224.

The spelling of 61690238 in words is "sixty-one million, six hundred ninety thousand, two hundred thirty-eight".