61210070 has 32 divisors (see below), whose sum is σ = 113363712. Its totient is φ = 23782752.

The previous prime is 61210043. The next prime is 61210073. The reversal of 61210070 is 7001216.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61210073) 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, 121439 + ... + 121941.

It is an arithmetic number, because the mean of its divisors is an integer number (3542616).

Almost surely, 2^61210070 is an apocalyptic number.

61210070 is a deficient number, since it is larger than the sum of its proper divisors (52153642).

61210070 is a wasteful number, since it uses less digits than its factorization.

61210070 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 836.

The product of its (nonzero) digits is 84, while the sum is 17.

The square root of 61210070 is about 7823.6864712231. The cubic root of 61210070 is about 394.1010803383.

Adding to 61210070 its reverse (7001216), we get a palindrome (68211286).

The spelling of 61210070 in words is "sixty-one million, two hundred ten thousand, seventy".