106621537 has 24 divisors (see below), whose sum is σ = 123748128. Its totient is φ = 91080000.

The previous prime is 106621523. The next prime is 106621549. The reversal of 106621537 is 735126601.

It is not a de Polignac number, because 106621537 - 2²³ = 98232929 is a prime.

It is a super-2 number, since 2×106621537² = 22736304304484738, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 106621499 and 106621508.

It is not an unprimeable number, because it can be changed into a prime (106621507) 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, 424662 + ... + 424912.

It is an arithmetic number, because the mean of its divisors is an integer number (5156172).

Almost surely, 2^106621537 is an apocalyptic number.

It is an amenable number.

106621537 is a deficient number, since it is larger than the sum of its proper divisors (17126591).

106621537 is a wasteful number, since it uses less digits than its factorization.

106621537 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 381 (or 358 counting only the distinct ones).

The product of its (nonzero) digits is 7560, while the sum is 31.

The square root of 106621537 is about 10325.7705281495. The cubic root of 106621537 is about 474.1855472433.

The spelling of 106621537 in words is "one hundred six million, six hundred twenty-one thousand, five hundred thirty-seven".