61850397 has 24 divisors (see below), whose sum is σ = 96715776. Its totient is φ = 35054208.

The previous prime is 61850351. The next prime is 61850423. The reversal of 61850397 is 79305816.

It is not a de Polignac number, because 61850397 - 2⁶ = 61850333 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61850497) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17013 + ... + 20325.

It is an arithmetic number, because the mean of its divisors is an integer number (4029824).

Almost surely, 2^61850397 is an apocalyptic number.

It is an amenable number.

61850397 is a deficient number, since it is larger than the sum of its proper divisors (34865379).

61850397 is a wasteful number, since it uses less digits than its factorization.

61850397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3457 (or 3450 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 39.

The square root of 61850397 is about 7864.5023364483. The cubic root of 61850397 is about 395.4705645464.

It can be divided in two parts, 618 and 50397, that added together give a palindrome (51015).

The spelling of 61850397 in words is "sixty-one million, eight hundred fifty thousand, three hundred ninety-seven".